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Finding the Fourth Proportional to 261,753.66, 392,626.17 and 64,761.66

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Solution

The fourth proportional to 261,753.66, 392,626.17 and 64,761.66 is: 97,141.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,753.66 : 392,626.17 = 64,761.66 : x
  2. Step 2: Convert to fraction form
    261,753.66/392,626.17 = 64,761.66/x
  3. Step 3: Cross multiply
    261,753.66x = 392,626.17 × 64,761.66
  4. Step 4: Simplify right side
    261,753.66x = 25,427,122,528.64
  5. Step 5: Solve for x
    x = 25,427,122,528.64/261,753.66
  6. Step 6: Final answer
    x = 97,141.42

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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.