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Finding the Fourth Proportional to 65,876.66, 98,585.15 and 53,891.90

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Solution

The fourth proportional to 65,876.66, 98,585.15 and 53,891.90 is: 80,649.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,876.66 : 98,585.15 = 53,891.90 : x
  2. Step 2: Convert to fraction form
    65,876.66/98,585.15 = 53,891.90/x
  3. Step 3: Cross multiply
    65,876.66x = 98,585.15 × 53,891.90
  4. Step 4: Simplify right side
    65,876.66x = 5,312,940,282.90
  5. Step 5: Solve for x
    x = 5,312,940,282.90/65,876.66
  6. Step 6: Final answer
    x = 80,649.82

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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.