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Finding the Fourth Proportional to 82,690.92, 124,037.15 and 26,531.15

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Solution

The fourth proportional to 82,690.92, 124,037.15 and 26,531.15 is: 39,796.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,690.92 : 124,037.15 = 26,531.15 : x
  2. Step 2: Convert to fraction form
    82,690.92/124,037.15 = 26,531.15/x
  3. Step 3: Cross multiply
    82,690.92x = 124,037.15 × 26,531.15
  4. Step 4: Simplify right side
    82,690.92x = 3,290,847,479.38
  5. Step 5: Solve for x
    x = 3,290,847,479.38/82,690.92
  6. Step 6: Final answer
    x = 39,796.96

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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.