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Question

State True or False
The third proportion between 0.2 and 0.8 is 0.4.

A
True
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B
False
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Solution

The correct option is A True

If a : b :: b : c, then we say that a, b, c are in continued
proportion, and c is the third proportional of a and b.
Here, b2=ac or b=ac
So, for 0.2,0.8, the third proportional is b=ac=0.2×0.8=0.16=0.4


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