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Finding the Fourth Proportional to 625,665, 863,412.57 and 339,177.72

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Solution

The fourth proportional to 625,665, 863,412.57 and 339,177.72 is: 468,062.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,665 : 863,412.57 = 339,177.72 : x
  2. Step 2: Convert to fraction form
    625,665/863,412.57 = 339,177.72/x
  3. Step 3: Cross multiply
    625,665x = 863,412.57 × 339,177.72
  4. Step 4: Simplify right side
    625,665x = 292,850,306,911.94
  5. Step 5: Solve for x
    x = 292,850,306,911.94/625,665
  6. Step 6: Final answer
    x = 468,062.47

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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.