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Finding the Fourth Proportional to 87,472.32, 131,097.48 and 55,872.60

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Solution

The fourth proportional to 87,472.32, 131,097.48 and 55,872.60 is: 83,738.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,472.32 : 131,097.48 = 55,872.60 : x
  2. Step 2: Convert to fraction form
    87,472.32/131,097.48 = 55,872.60/x
  3. Step 3: Cross multiply
    87,472.32x = 131,097.48 × 55,872.60
  4. Step 4: Simplify right side
    87,472.32x = 7,324,757,061.05
  5. Step 5: Solve for x
    x = 7,324,757,061.05/87,472.32
  6. Step 6: Final answer
    x = 83,738.00

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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.