Question
If the third proportion of 18 and 36 is “0.5k”, then
find the value of (k − 24) : (k + 16).Solution
Third proportion of two numbers ‘a’ and ‘b’ is (b²/a).
So, 0.5k = (36²/18) = 72
Or, 'k' = 144
Required value = (144 - 24) : (144 + 16) = 120 : 160 = 3 : 4
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