Question
Find the fourth proportion of (3k), (4k), and (6k). (Note:
'k' is the smallest two-digit prime number.)Solution
k = 11
3k = 33
4k = 44
6k = 66
33 : 44 :: 66 : m
33m = 44 × 66 = 2904
m = 2904 ÷ 33 = 88
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