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Finding the Fourth Proportional to 624,634.57, 861,998.44 and 338,154.65

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Solution

The fourth proportional to 624,634.57, 861,998.44 and 338,154.65 is: 466,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,634.57 : 861,998.44 = 338,154.65 : x
  2. Step 2: Convert to fraction form
    624,634.57/861,998.44 = 338,154.65/x
  3. Step 3: Cross multiply
    624,634.57x = 861,998.44 × 338,154.65
  4. Step 4: Simplify right side
    624,634.57x = 291,488,776,468.75
  5. Step 5: Solve for x
    x = 291,488,776,468.75/624,634.57
  6. Step 6: Final answer
    x = 466,654.89

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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.