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Finding the Fourth Proportional to 18,512.10, 27,764.15 and 5,862.87

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Solution

The fourth proportional to 18,512.10, 27,764.15 and 5,862.87 is: 8,793.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.10 : 27,764.15 = 5,862.87 : x
  2. Step 2: Convert to fraction form
    18,512.10/27,764.15 = 5,862.87/x
  3. Step 3: Cross multiply
    18,512.10x = 27,764.15 × 5,862.87
  4. Step 4: Simplify right side
    18,512.10x = 162,777,572.80
  5. Step 5: Solve for x
    x = 162,777,572.80/18,512.10
  6. Step 6: Final answer
    x = 8,793.04

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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.