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Finding the Fourth Proportional to 81,603.52, 112,610.96 and 45,792.61

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Solution

The fourth proportional to 81,603.52, 112,610.96 and 45,792.61 is: 63,192.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,603.52 : 112,610.96 = 45,792.61 : x
  2. Step 2: Convert to fraction form
    81,603.52/112,610.96 = 45,792.61/x
  3. Step 3: Cross multiply
    81,603.52x = 112,610.96 × 45,792.61
  4. Step 4: Simplify right side
    81,603.52x = 5,156,749,434.24
  5. Step 5: Solve for x
    x = 5,156,749,434.24/81,603.52
  6. Step 6: Final answer
    x = 63,192.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.