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Finding the Fourth Proportional to 57,658.43, 86,531.40 and 38,893.97

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Solution

The fourth proportional to 57,658.43, 86,531.40 and 38,893.97 is: 58,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,658.43 : 86,531.40 = 38,893.97 : x
  2. Step 2: Convert to fraction form
    57,658.43/86,531.40 = 38,893.97/x
  3. Step 3: Cross multiply
    57,658.43x = 86,531.40 × 38,893.97
  4. Step 4: Simplify right side
    57,658.43x = 3,365,549,243.00
  5. Step 5: Solve for x
    x = 3,365,549,243.00/57,658.43
  6. Step 6: Final answer
    x = 58,370.47

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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.