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Finding the Fourth Proportional to 57,906.70, 86,874.19 and 18,463.82

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Solution

The fourth proportional to 57,906.70, 86,874.19 and 18,463.82 is: 27,700.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,906.70 : 86,874.19 = 18,463.82 : x
  2. Step 2: Convert to fraction form
    57,906.70/86,874.19 = 18,463.82/x
  3. Step 3: Cross multiply
    57,906.70x = 86,874.19 × 18,463.82
  4. Step 4: Simplify right side
    57,906.70x = 1,604,028,926.28
  5. Step 5: Solve for x
    x = 1,604,028,926.28/57,906.70
  6. Step 6: Final answer
    x = 27,700.23

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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.