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Question

Three numbers are in the ratio 1:2:3 and the sum of their cubes is 98784.
Find the numbers.

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Solution

Let the 1x,2x&3x are the 3 numbers
sum of their cubes =x3+(2x)3+(3x)3
=98+84
=(36x)3
x3=9878436=2274
x=2744=14
3 numbers are 14,28,42

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