A ∶ B = 4 ∶ 5, B ∶ C = 7 ∶ 9 ആണെങ്കിൽ, A ∶ B ∶ C കണ്ടെത്തുക. 

1
28 ∶ 35 ∶ 45
2
25 ∶ 35 ∶ 49
3
28 ∶ 30 ∶ 49
4
25 ∶ 30 ∶ 45

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