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Finding the Fourth Proportional to 57,998.87, 87,009.24 and 18,545.39

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Solution

The fourth proportional to 57,998.87, 87,009.24 and 18,545.39 is: 27,821.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,998.87 : 87,009.24 = 18,545.39 : x
  2. Step 2: Convert to fraction form
    57,998.87/87,009.24 = 18,545.39/x
  3. Step 3: Cross multiply
    57,998.87x = 87,009.24 × 18,545.39
  4. Step 4: Simplify right side
    57,998.87x = 1,613,620,289.40
  5. Step 5: Solve for x
    x = 1,613,620,289.40/57,998.87
  6. Step 6: Final answer
    x = 27,821.58

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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.