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Finding the Fourth Proportional to 482,916,697.80, 724,375,046.70 and 445,609,539.60

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Solution

The fourth proportional to 482,916,697.80, 724,375,046.70 and 445,609,539.60 is: 668,414,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,916,697.80 : 724,375,046.70 = 445,609,539.60 : x
  2. Step 2: Convert to fraction form
    482,916,697.80/724,375,046.70 = 445,609,539.60/x
  3. Step 3: Cross multiply
    482,916,697.80x = 724,375,046.70 × 445,609,539.60
  4. Step 4: Simplify right side
    482,916,697.80x = 322,788,431,057,715,520
  5. Step 5: Solve for x
    x = 322,788,431,057,715,520/482,916,697.80
  6. Step 6: Final answer
    x = 668,414,309.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.