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Finding the Fourth Proportional to 38,608.26, 57,893.90 and 18,863.70

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Solution

The fourth proportional to 38,608.26, 57,893.90 and 18,863.70 is: 28,286.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,608.26 : 57,893.90 = 18,863.70 : x
  2. Step 2: Convert to fraction form
    38,608.26/57,893.90 = 18,863.70/x
  3. Step 3: Cross multiply
    38,608.26x = 57,893.90 × 18,863.70
  4. Step 4: Simplify right side
    38,608.26x = 1,092,093,067.11
  5. Step 5: Solve for x
    x = 1,092,093,067.11/38,608.26
  6. Step 6: Final answer
    x = 28,286.51

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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.