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Finding the Fourth Proportional to 18,839.97, 25,996.14 and 10,880.73

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Solution

The fourth proportional to 18,839.97, 25,996.14 and 10,880.73 is: 15,013.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,839.97 : 25,996.14 = 10,880.73 : x
  2. Step 2: Convert to fraction form
    18,839.97/25,996.14 = 10,880.73/x
  3. Step 3: Cross multiply
    18,839.97x = 25,996.14 × 10,880.73
  4. Step 4: Simplify right side
    18,839.97x = 282,856,980.38
  5. Step 5: Solve for x
    x = 282,856,980.38/18,839.97
  6. Step 6: Final answer
    x = 15,013.66

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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.