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Finding the Fourth Proportional to 108,408.55, 149,575.42 and 62,456.94

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Solution

The fourth proportional to 108,408.55, 149,575.42 and 62,456.94 is: 86,174.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,408.55 : 149,575.42 = 62,456.94 : x
  2. Step 2: Convert to fraction form
    108,408.55/149,575.42 = 62,456.94/x
  3. Step 3: Cross multiply
    108,408.55x = 149,575.42 × 62,456.94
  4. Step 4: Simplify right side
    108,408.55x = 9,342,023,250.21
  5. Step 5: Solve for x
    x = 9,342,023,250.21/108,408.55
  6. Step 6: Final answer
    x = 86,174.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.