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Finding the Fourth Proportional to 42,661.73, 63,992.95 and 27,963.72

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Solution

The fourth proportional to 42,661.73, 63,992.95 and 27,963.72 is: 41,945.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,661.73 : 63,992.95 = 27,963.72 : x
  2. Step 2: Convert to fraction form
    42,661.73/63,992.95 = 27,963.72/x
  3. Step 3: Cross multiply
    42,661.73x = 63,992.95 × 27,963.72
  4. Step 4: Simplify right side
    42,661.73x = 1,789,480,865.86
  5. Step 5: Solve for x
    x = 1,789,480,865.86/42,661.73
  6. Step 6: Final answer
    x = 41,945.81

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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.