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Finding the Fourth Proportional to 58,497.55, 87,761.88 and 18,517.30

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Solution

The fourth proportional to 58,497.55, 87,761.88 and 18,517.30 is: 27,780.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,497.55 : 87,761.88 = 18,517.30 : x
  2. Step 2: Convert to fraction form
    58,497.55/87,761.88 = 18,517.30/x
  3. Step 3: Cross multiply
    58,497.55x = 87,761.88 × 18,517.30
  4. Step 4: Simplify right side
    58,497.55x = 1,625,112,841.12
  5. Step 5: Solve for x
    x = 1,625,112,841.12/58,497.55
  6. Step 6: Final answer
    x = 27,780.87

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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.