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Finding the Fourth Proportional to 38,115.77, 57,239.26 and 20,597.90

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Solution

The fourth proportional to 38,115.77, 57,239.26 and 20,597.90 is: 30,932.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,115.77 : 57,239.26 = 20,597.90 : x
  2. Step 2: Convert to fraction form
    38,115.77/57,239.26 = 20,597.90/x
  3. Step 3: Cross multiply
    38,115.77x = 57,239.26 × 20,597.90
  4. Step 4: Simplify right side
    38,115.77x = 1,179,008,215.86
  5. Step 5: Solve for x
    x = 1,179,008,215.86/38,115.77
  6. Step 6: Final answer
    x = 30,932.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.