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Finding the Fourth Proportional to 12,471.99, 18,691.81 and 5,067.85

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Solution

The fourth proportional to 12,471.99, 18,691.81 and 5,067.85 is: 7,595.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.99 : 18,691.81 = 5,067.85 : x
  2. Step 2: Convert to fraction form
    12,471.99/18,691.81 = 5,067.85/x
  3. Step 3: Cross multiply
    12,471.99x = 18,691.81 × 5,067.85
  4. Step 4: Simplify right side
    12,471.99x = 94,727,289.31
  5. Step 5: Solve for x
    x = 94,727,289.31/12,471.99
  6. Step 6: Final answer
    x = 7,595.20

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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.