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Finding the Fourth Proportional to 625,178.78, 862,747.60 and 338,698.87

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Solution

The fourth proportional to 625,178.78, 862,747.60 and 338,698.87 is: 467,404.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,178.78 : 862,747.60 = 338,698.87 : x
  2. Step 2: Convert to fraction form
    625,178.78/862,747.60 = 338,698.87/x
  3. Step 3: Cross multiply
    625,178.78x = 862,747.60 × 338,698.87
  4. Step 4: Simplify right side
    625,178.78x = 292,211,636,368.47
  5. Step 5: Solve for x
    x = 292,211,636,368.47/625,178.78
  6. Step 6: Final answer
    x = 467,404.92

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1.5x scale

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.