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Finding the Fourth Proportional to 15,940.62, 23,914.13 and 8,930.61

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Solution

The fourth proportional to 15,940.62, 23,914.13 and 8,930.61 is: 13,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,940.62 : 23,914.13 = 8,930.61 : x
  2. Step 2: Convert to fraction form
    15,940.62/23,914.13 = 8,930.61/x
  3. Step 3: Cross multiply
    15,940.62x = 23,914.13 × 8,930.61
  4. Step 4: Simplify right side
    15,940.62x = 213,567,723.87
  5. Step 5: Solve for x
    x = 213,567,723.87/15,940.62
  6. Step 6: Final answer
    x = 13,397.70

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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.