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Finding the Fourth Proportional to 58,791.61, 81,132.45 and 31,934.56

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Solution

The fourth proportional to 58,791.61, 81,132.45 and 31,934.56 is: 44,069.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,791.61 : 81,132.45 = 31,934.56 : x
  2. Step 2: Convert to fraction form
    58,791.61/81,132.45 = 31,934.56/x
  3. Step 3: Cross multiply
    58,791.61x = 81,132.45 × 31,934.56
  4. Step 4: Simplify right side
    58,791.61x = 2,590,929,092.47
  5. Step 5: Solve for x
    x = 2,590,929,092.47/58,791.61
  6. Step 6: Final answer
    x = 44,069.71

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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.