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Finding the Fourth Proportional to 57,847.91, 86,788.26 and 18,408.11

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Solution

The fourth proportional to 57,847.91, 86,788.26 and 18,408.11 is: 27,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,847.91 : 86,788.26 = 18,408.11 : x
  2. Step 2: Convert to fraction form
    57,847.91/86,788.26 = 18,408.11/x
  3. Step 3: Cross multiply
    57,847.91x = 86,788.26 × 18,408.11
  4. Step 4: Simplify right side
    57,847.91x = 1,597,607,402.85
  5. Step 5: Solve for x
    x = 1,597,607,402.85/57,847.91
  6. Step 6: Final answer
    x = 27,617.38

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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.