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Finding the Fourth Proportional to 225,945.18, 338,909.04 and 68,169.42

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Solution

The fourth proportional to 225,945.18, 338,909.04 and 68,169.42 is: 102,251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,945.18 : 338,909.04 = 68,169.42 : x
  2. Step 2: Convert to fraction form
    225,945.18/338,909.04 = 68,169.42/x
  3. Step 3: Cross multiply
    225,945.18x = 338,909.04 × 68,169.42
  4. Step 4: Simplify right side
    225,945.18x = 23,103,232,689.56
  5. Step 5: Solve for x
    x = 23,103,232,689.56/225,945.18
  6. Step 6: Final answer
    x = 102,251.50

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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.