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Finding the Fourth Proportional to 99,791.96, 149,687.58 and 25,919.96

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Solution

The fourth proportional to 99,791.96, 149,687.58 and 25,919.96 is: 38,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,791.96 : 149,687.58 = 25,919.96 : x
  2. Step 2: Convert to fraction form
    99,791.96/149,687.58 = 25,919.96/x
  3. Step 3: Cross multiply
    99,791.96x = 149,687.58 × 25,919.96
  4. Step 4: Simplify right side
    99,791.96x = 3,879,896,086.10
  5. Step 5: Solve for x
    x = 3,879,896,086.10/99,791.96
  6. Step 6: Final answer
    x = 38,879.85

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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.