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Finding the Fourth Proportional to 625,103.68, 862,641.19 and 353,171.47

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Solution

The fourth proportional to 625,103.68, 862,641.19 and 353,171.47 is: 487,375.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,103.68 : 862,641.19 = 353,171.47 : x
  2. Step 2: Convert to fraction form
    625,103.68/862,641.19 = 353,171.47/x
  3. Step 3: Cross multiply
    625,103.68x = 862,641.19 × 353,171.47
  4. Step 4: Simplify right side
    625,103.68x = 304,660,257,154.85
  5. Step 5: Solve for x
    x = 304,660,257,154.85/625,103.68
  6. Step 6: Final answer
    x = 487,375.56

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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.