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Question

Question 15

Find the missing number in the box in each of the proportions:

1636=63=36=117


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Solution

We have, 1636=?63=36?=?117

49 is the simplest form of all the three ratio.
For first two ratios, 1636=4×49×4=4×79×7=2863
Hence, missing number = 28
For middle two ratios, 2863=36?2863=4×79×7=4×99×9=3681
Hence, missing number = 81
For last two ratios 3681=?1173681=4×99×9=4×139×13=52117
Hence, missing number = 52


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