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Finding the Fourth Proportional to 84,662.61, 126,983.49 and 49,143.27

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Solution

The fourth proportional to 84,662.61, 126,983.49 and 49,143.27 is: 73,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,662.61 : 126,983.49 = 49,143.27 : x
  2. Step 2: Convert to fraction form
    84,662.61/126,983.49 = 49,143.27/x
  3. Step 3: Cross multiply
    84,662.61x = 126,983.49 × 49,143.27
  4. Step 4: Simplify right side
    84,662.61x = 6,240,383,934.61
  5. Step 5: Solve for x
    x = 6,240,383,934.61/84,662.61
  6. Step 6: Final answer
    x = 73,708.85

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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.