Question

1. 3. Find the fourth proportional in each of the following: i. 3, 5,21
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Answer 1

Answer:

hope it helps

Step-by-step explanation:

check once again

Answer 2

Answer: 35

Step-by-step explanation:

Let the no. be x

3:5::21:x

= 3:5 = 21:x

cross multiply

= 21x5 = 3x

= 105 = 3x

= x = 35

Hence the fourth proportional is 35.

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