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Finding the Fourth Proportional to 638,519.88, 958,403.10 and 527,332.80

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Solution

The fourth proportional to 638,519.88, 958,403.10 and 527,332.80 is: 791,513.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,519.88 : 958,403.10 = 527,332.80 : x
  2. Step 2: Convert to fraction form
    638,519.88/958,403.10 = 527,332.80/x
  3. Step 3: Cross multiply
    638,519.88x = 958,403.10 × 527,332.80
  4. Step 4: Simplify right side
    638,519.88x = 505,397,390,251.68
  5. Step 5: Solve for x
    x = 505,397,390,251.68/638,519.88
  6. Step 6: Final answer
    x = 791,513.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.