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Finding the Fourth Proportional to 27,892.70, 41,839.05 and 16,811.90

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Solution

The fourth proportional to 27,892.70, 41,839.05 and 16,811.90 is: 25,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,892.70 : 41,839.05 = 16,811.90 : x
  2. Step 2: Convert to fraction form
    27,892.70/41,839.05 = 16,811.90/x
  3. Step 3: Cross multiply
    27,892.70x = 41,839.05 × 16,811.90
  4. Step 4: Simplify right side
    27,892.70x = 703,393,924.70
  5. Step 5: Solve for x
    x = 703,393,924.70/27,892.70
  6. Step 6: Final answer
    x = 25,217.85

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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.