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Finding the Fourth Proportional to 92,479.20, 138,724.95 and 32,500.42

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Solution

The fourth proportional to 92,479.20, 138,724.95 and 32,500.42 is: 48,752.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,479.20 : 138,724.95 = 32,500.42 : x
  2. Step 2: Convert to fraction form
    92,479.20/138,724.95 = 32,500.42/x
  3. Step 3: Cross multiply
    92,479.20x = 138,724.95 × 32,500.42
  4. Step 4: Simplify right side
    92,479.20x = 4,508,619,694.87
  5. Step 5: Solve for x
    x = 4,508,619,694.87/92,479.20
  6. Step 6: Final answer
    x = 48,752.80

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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.