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Finding the Fourth Proportional to 625,191.66, 862,763.31 and 338,719.50

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Solution

The fourth proportional to 625,191.66, 862,763.31 and 338,719.50 is: 467,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,191.66 : 862,763.31 = 338,719.50 : x
  2. Step 2: Convert to fraction form
    625,191.66/862,763.31 = 338,719.50/x
  3. Step 3: Cross multiply
    625,191.66x = 862,763.31 × 338,719.50
  4. Step 4: Simplify right side
    625,191.66x = 292,234,756,981.55
  5. Step 5: Solve for x
    x = 292,234,756,981.55/625,191.66
  6. Step 6: Final answer
    x = 467,432.27

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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.