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Finding the Fourth Proportional to 18,250.71, 27,375.86 and 7,149.52

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Solution

The fourth proportional to 18,250.71, 27,375.86 and 7,149.52 is: 10,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250.71 : 27,375.86 = 7,149.52 : x
  2. Step 2: Convert to fraction form
    18,250.71/27,375.86 = 7,149.52/x
  3. Step 3: Cross multiply
    18,250.71x = 27,375.86 × 7,149.52
  4. Step 4: Simplify right side
    18,250.71x = 195,724,222.84
  5. Step 5: Solve for x
    x = 195,724,222.84/18,250.71
  6. Step 6: Final answer
    x = 10,724.20

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1.5x scale

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.