Solve: Product of Mixed Numbers 4¼ × 3⅔ × 3 1/17

4143493117=? 4\frac{1}{4}\cdot3\frac{4}{9}\cdot3\frac{1}{17}=\text{?}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:07 We want to convert the whole number to a fraction
00:10 Multiply the whole number by the denominator and add to numerator
00:16 Add the fraction
00:20 Calculate 4 times 4
00:25 This is the representation of the entire number as a fraction
00:31 Continue with the same method and find the fractions
00:35 Multiply the whole number by denominator, add to numerator and combine with the fraction
00:44 This is the representation of the entire number as a fraction
00:48 Continue to the last number
00:54 Multiply the whole number by denominator, add to numerator and combine with the fraction
01:01 This is the representation of the entire number as a fraction
01:07 Now let's use this representation of the numbers
01:22 Reduce what we can
01:25 Make sure to multiply numerator by numerator and denominator by denominator
01:39 Break down the fraction to find a whole number
01:51 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

4143493117=? 4\frac{1}{4}\cdot3\frac{4}{9}\cdot3\frac{1}{17}=\text{?}

2

Step-by-step solution

Multiply each fraction as follows:

Multiply the whole number by the denominator of the fraction and add the number in the numerator of the fraction.

That is:

414=4×4+14=16+14=174 4\frac{1}{4}=\frac{4\times4+1}{4}=\frac{16+1}{4}=\frac{17}{4}

349=9×3+49=27+49=319 3\frac{4}{9}=\frac{9\times3+4}{9}=\frac{27+4}{9}=\frac{31}{9}

3117=17×3+117=51+117=5217 3\frac{1}{17}=\frac{17\times3+1}{17}=\frac{51+1}{17}=\frac{52}{17}

Now we get the exercise:

174×319×5217= \frac{17}{4}\times\frac{31}{9}\times\frac{52}{17}=

We simplify the 17 and get:

31×524×9=524×319=13×319=4039=4479 \frac{31\times52}{4\times9}=\frac{52}{4}\times\frac{31}{9}=13\times\frac{31}{9}=\frac{403}{9}=44\frac{7}{9}

3

Final Answer

4479 44\frac{7}{9}

Practice Quiz

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\( -5+4+1-3 \)

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