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Finding the Fourth Proportional to 18,375.28, 27,531.22 and 10,061.28

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Solution

The fourth proportional to 18,375.28, 27,531.22 and 10,061.28 is: 15,074.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.28 : 27,531.22 = 10,061.28 : x
  2. Step 2: Convert to fraction form
    18,375.28/27,531.22 = 10,061.28/x
  3. Step 3: Cross multiply
    18,375.28x = 27,531.22 × 10,061.28
  4. Step 4: Simplify right side
    18,375.28x = 276,999,313.16
  5. Step 5: Solve for x
    x = 276,999,313.16/18,375.28
  6. Step 6: Final answer
    x = 15,074.56

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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.