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Finding the Fourth Proportional to 58,211.43, 87,314.72 and 16,658.43

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Solution

The fourth proportional to 58,211.43, 87,314.72 and 16,658.43 is: 24,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,211.43 : 87,314.72 = 16,658.43 : x
  2. Step 2: Convert to fraction form
    58,211.43/87,314.72 = 16,658.43/x
  3. Step 3: Cross multiply
    58,211.43x = 87,314.72 × 16,658.43
  4. Step 4: Simplify right side
    58,211.43x = 1,454,526,067.80
  5. Step 5: Solve for x
    x = 1,454,526,067.80/58,211.43
  6. Step 6: Final answer
    x = 24,986.95

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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.