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Finding the Fourth Proportional to 83,121.92, 124,682.61 and 23,957.90

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Solution

The fourth proportional to 83,121.92, 124,682.61 and 23,957.90 is: 35,936.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,121.92 : 124,682.61 = 23,957.90 : x
  2. Step 2: Convert to fraction form
    83,121.92/124,682.61 = 23,957.90/x
  3. Step 3: Cross multiply
    83,121.92x = 124,682.61 × 23,957.90
  4. Step 4: Simplify right side
    83,121.92x = 2,987,133,502.12
  5. Step 5: Solve for x
    x = 2,987,133,502.12/83,121.92
  6. Step 6: Final answer
    x = 35,936.77

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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.