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Finding the Fourth Proportional to 68,659.75, 102,924.68 and 51,766.53

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Solution

The fourth proportional to 68,659.75, 102,924.68 and 51,766.53 is: 77,600.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,659.75 : 102,924.68 = 51,766.53 : x
  2. Step 2: Convert to fraction form
    68,659.75/102,924.68 = 51,766.53/x
  3. Step 3: Cross multiply
    68,659.75x = 102,924.68 × 51,766.53
  4. Step 4: Simplify right side
    68,659.75x = 5,328,052,890.16
  5. Step 5: Solve for x
    x = 5,328,052,890.16/68,659.75
  6. Step 6: Final answer
    x = 77,600.82

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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.