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Finding the Fourth Proportional to 87,061.69, 130,592.53 and 57,472.59

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Solution

The fourth proportional to 87,061.69, 130,592.53 and 57,472.59 is: 86,208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,061.69 : 130,592.53 = 57,472.59 : x
  2. Step 2: Convert to fraction form
    87,061.69/130,592.53 = 57,472.59/x
  3. Step 3: Cross multiply
    87,061.69x = 130,592.53 × 57,472.59
  4. Step 4: Simplify right side
    87,061.69x = 7,505,490,933.75
  5. Step 5: Solve for x
    x = 7,505,490,933.75/87,061.69
  6. Step 6: Final answer
    x = 86,208.89

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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.