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Finding the Fourth Proportional to 225,456.12, 338,240.34 and 67,687.48

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Solution

The fourth proportional to 225,456.12, 338,240.34 and 67,687.48 is: 101,548.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,456.12 : 338,240.34 = 67,687.48 : x
  2. Step 2: Convert to fraction form
    225,456.12/338,240.34 = 67,687.48/x
  3. Step 3: Cross multiply
    225,456.12x = 338,240.34 × 67,687.48
  4. Step 4: Simplify right side
    225,456.12x = 22,894,636,248.94
  5. Step 5: Solve for x
    x = 22,894,636,248.94/225,456.12
  6. Step 6: Final answer
    x = 101,548.08

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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.