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Finding the Fourth Proportional to 18,591.28, 27,753.20 and 15,930.12

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Solution

The fourth proportional to 18,591.28, 27,753.20 and 15,930.12 is: 23,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.28 : 27,753.20 = 15,930.12 : x
  2. Step 2: Convert to fraction form
    18,591.28/27,753.20 = 15,930.12/x
  3. Step 3: Cross multiply
    18,591.28x = 27,753.20 × 15,930.12
  4. Step 4: Simplify right side
    18,591.28x = 442,111,806.38
  5. Step 5: Solve for x
    x = 442,111,806.38/18,591.28
  6. Step 6: Final answer
    x = 23,780.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.