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Finding the Fourth Proportional to 18,472.44, 27,719.90 and 6,786.57

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Solution

The fourth proportional to 18,472.44, 27,719.90 and 6,786.57 is: 10,183.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.44 : 27,719.90 = 6,786.57 : x
  2. Step 2: Convert to fraction form
    18,472.44/27,719.90 = 6,786.57/x
  3. Step 3: Cross multiply
    18,472.44x = 27,719.90 × 6,786.57
  4. Step 4: Simplify right side
    18,472.44x = 188,123,041.74
  5. Step 5: Solve for x
    x = 188,123,041.74/18,472.44
  6. Step 6: Final answer
    x = 10,183.98

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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.