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Finding the Fourth Proportional to 65,044.48, 89,775.88 and 39,545.46

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Solution

The fourth proportional to 65,044.48, 89,775.88 and 39,545.46 is: 54,581.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,044.48 : 89,775.88 = 39,545.46 : x
  2. Step 2: Convert to fraction form
    65,044.48/89,775.88 = 39,545.46/x
  3. Step 3: Cross multiply
    65,044.48x = 89,775.88 × 39,545.46
  4. Step 4: Simplify right side
    65,044.48x = 3,550,228,471.50
  5. Step 5: Solve for x
    x = 3,550,228,471.50/65,044.48
  6. Step 6: Final answer
    x = 54,581.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.