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Finding the Fourth Proportional to 84,489.72, 126,898.62 and 62,215.13

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Solution

The fourth proportional to 84,489.72, 126,898.62 and 62,215.13 is: 93,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,489.72 : 126,898.62 = 62,215.13 : x
  2. Step 2: Convert to fraction form
    84,489.72/126,898.62 = 62,215.13/x
  3. Step 3: Cross multiply
    84,489.72x = 126,898.62 × 62,215.13
  4. Step 4: Simplify right side
    84,489.72x = 7,895,013,505.63
  5. Step 5: Solve for x
    x = 7,895,013,505.63/84,489.72
  6. Step 6: Final answer
    x = 93,443.48

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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.