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Finding the Fourth Proportional to 58,793.78, 81,135.57 and 31,936.07

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Solution

The fourth proportional to 58,793.78, 81,135.57 and 31,936.07 is: 44,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,793.78 : 81,135.57 = 31,936.07 : x
  2. Step 2: Convert to fraction form
    58,793.78/81,135.57 = 31,936.07/x
  3. Step 3: Cross multiply
    58,793.78x = 81,135.57 × 31,936.07
  4. Step 4: Simplify right side
    58,793.78x = 2,591,151,565.61
  5. Step 5: Solve for x
    x = 2,591,151,565.61/58,793.78
  6. Step 6: Final answer
    x = 44,071.86

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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.