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Finding the Fourth Proportional to 18,491.67, 25,520.29 and 10,940.43

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Solution

The fourth proportional to 18,491.67, 25,520.29 and 10,940.43 is: 15,098.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.67 : 25,520.29 = 10,940.43 : x
  2. Step 2: Convert to fraction form
    18,491.67/25,520.29 = 10,940.43/x
  3. Step 3: Cross multiply
    18,491.67x = 25,520.29 × 10,940.43
  4. Step 4: Simplify right side
    18,491.67x = 279,202,918.97
  5. Step 5: Solve for x
    x = 279,202,918.97/18,491.67
  6. Step 6: Final answer
    x = 15,098.85

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1.5x scale

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.