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Finding the Fourth Proportional to 625,154.32, 862,711.92 and 338,681.68

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Solution

The fourth proportional to 625,154.32, 862,711.92 and 338,681.68 is: 467,380.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,154.32 : 862,711.92 = 338,681.68 : x
  2. Step 2: Convert to fraction form
    625,154.32/862,711.92 = 338,681.68/x
  3. Step 3: Cross multiply
    625,154.32x = 862,711.92 × 338,681.68
  4. Step 4: Simplify right side
    625,154.32x = 292,184,722,421.63
  5. Step 5: Solve for x
    x = 292,184,722,421.63/625,154.32
  6. Step 6: Final answer
    x = 467,380.15

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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.