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Finding the Fourth Proportional to 625,057.20, 862,517.16 and 349,363.44

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Solution

The fourth proportional to 625,057.20, 862,517.16 and 349,363.44 is: 482,087.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,057.20 : 862,517.16 = 349,363.44 : x
  2. Step 2: Convert to fraction form
    625,057.20/862,517.16 = 349,363.44/x
  3. Step 3: Cross multiply
    625,057.20x = 862,517.16 × 349,363.44
  4. Step 4: Simplify right side
    625,057.20x = 301,331,962,076.63
  5. Step 5: Solve for x
    x = 301,331,962,076.63/625,057.20
  6. Step 6: Final answer
    x = 482,087.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.