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Finding the Fourth Proportional to 217,744.45, 326,489.54 and 84,468.97

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Solution

The fourth proportional to 217,744.45, 326,489.54 and 84,468.97 is: 126,654.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,744.45 : 326,489.54 = 84,468.97 : x
  2. Step 2: Convert to fraction form
    217,744.45/326,489.54 = 84,468.97/x
  3. Step 3: Cross multiply
    217,744.45x = 326,489.54 × 84,468.97
  4. Step 4: Simplify right side
    217,744.45x = 27,578,234,554.52
  5. Step 5: Solve for x
    x = 27,578,234,554.52/217,744.45
  6. Step 6: Final answer
    x = 126,654.13

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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.