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Finding the Fourth Proportional to 57,865.88, 86,709.52 and 39,072.26

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Solution

The fourth proportional to 57,865.88, 86,709.52 and 39,072.26 is: 58,548.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,865.88 : 86,709.52 = 39,072.26 : x
  2. Step 2: Convert to fraction form
    57,865.88/86,709.52 = 39,072.26/x
  3. Step 3: Cross multiply
    57,865.88x = 86,709.52 × 39,072.26
  4. Step 4: Simplify right side
    57,865.88x = 3,387,936,909.92
  5. Step 5: Solve for x
    x = 3,387,936,909.92/57,865.88
  6. Step 6: Final answer
    x = 58,548.09

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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.