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Finding the Fourth Proportional to 47,991.09, 71,986.61 and 25,773.90

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Solution

The fourth proportional to 47,991.09, 71,986.61 and 25,773.90 is: 38,660.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,991.09 : 71,986.61 = 25,773.90 : x
  2. Step 2: Convert to fraction form
    47,991.09/71,986.61 = 25,773.90/x
  3. Step 3: Cross multiply
    47,991.09x = 71,986.61 × 25,773.90
  4. Step 4: Simplify right side
    47,991.09x = 1,855,375,558.61
  5. Step 5: Solve for x
    x = 1,855,375,558.61/47,991.09
  6. Step 6: Final answer
    x = 38,660.83

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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.