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Finding the Fourth Proportional to 87,475.20, 131,212.80 and 32,092.80

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Solution

The fourth proportional to 87,475.20, 131,212.80 and 32,092.80 is: 48,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,475.20 : 131,212.80 = 32,092.80 : x
  2. Step 2: Convert to fraction form
    87,475.20/131,212.80 = 32,092.80/x
  3. Step 3: Cross multiply
    87,475.20x = 131,212.80 × 32,092.80
  4. Step 4: Simplify right side
    87,475.20x = 4,210,986,147.84
  5. Step 5: Solve for x
    x = 4,210,986,147.84/87,475.20
  6. Step 6: Final answer
    x = 48,139.20

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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.