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Finding the Fourth Proportional to 57,687.89, 86,540.99 and 24,408.21

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Solution

The fourth proportional to 57,687.89, 86,540.99 and 24,408.21 is: 36,616.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,687.89 : 86,540.99 = 24,408.21 : x
  2. Step 2: Convert to fraction form
    57,687.89/86,540.99 = 24,408.21/x
  3. Step 3: Cross multiply
    57,687.89x = 86,540.99 × 24,408.21
  4. Step 4: Simplify right side
    57,687.89x = 2,112,310,102.78
  5. Step 5: Solve for x
    x = 2,112,310,102.78/57,687.89
  6. Step 6: Final answer
    x = 36,616.18

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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.