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Finding the Fourth Proportional to 625,023.67, 862,532.91 and 338,542.87

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Solution

The fourth proportional to 625,023.67, 862,532.91 and 338,542.87 is: 467,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,023.67 : 862,532.91 = 338,542.87 : x
  2. Step 2: Convert to fraction form
    625,023.67/862,532.91 = 338,542.87/x
  3. Step 3: Cross multiply
    625,023.67x = 862,532.91 × 338,542.87
  4. Step 4: Simplify right side
    625,023.67x = 292,004,366,820.85
  5. Step 5: Solve for x
    x = 292,004,366,820.85/625,023.67
  6. Step 6: Final answer
    x = 467,189.29

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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.