The ratio between the fourth proportional of 7, 5 and 3 to the third proportional of 7 and 13 is:
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If A ∶ B = 5 ∶ 6 and B ∶ C = 6 ∶ 7, then (A + B) ∶ (B + C) ∶ (C + A) is:

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SSC GD 2022, 10th Jan. 2023 Shift 2
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