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Finding the Fourth Proportional to 58,544, 80,761.92 and 39,687.04

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Solution

The fourth proportional to 58,544, 80,761.92 and 39,687.04 is: 54,748.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,544 : 80,761.92 = 39,687.04 : x
  2. Step 2: Convert to fraction form
    58,544/80,761.92 = 39,687.04/x
  3. Step 3: Cross multiply
    58,544x = 80,761.92 × 39,687.04
  4. Step 4: Simplify right side
    58,544x = 3,205,201,549.52
  5. Step 5: Solve for x
    x = 3,205,201,549.52/58,544
  6. Step 6: Final answer
    x = 54,748.59

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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.