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Finding the Fourth Proportional to 18,245.44, 27,350.74 and 7,148.44

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Solution

The fourth proportional to 18,245.44, 27,350.74 and 7,148.44 is: 10,715.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.44 : 27,350.74 = 7,148.44 : x
  2. Step 2: Convert to fraction form
    18,245.44/27,350.74 = 7,148.44/x
  3. Step 3: Cross multiply
    18,245.44x = 27,350.74 × 7,148.44
  4. Step 4: Simplify right side
    18,245.44x = 195,515,123.85
  5. Step 5: Solve for x
    x = 195,515,123.85/18,245.44
  6. Step 6: Final answer
    x = 10,715.83

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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.