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Finding the Fourth Proportional to 18,472.44, 27,720.82 and 6,785.76

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Solution

The fourth proportional to 18,472.44, 27,720.82 and 6,785.76 is: 10,183.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.44 : 27,720.82 = 6,785.76 : x
  2. Step 2: Convert to fraction form
    18,472.44/27,720.82 = 6,785.76/x
  3. Step 3: Cross multiply
    18,472.44x = 27,720.82 × 6,785.76
  4. Step 4: Simplify right side
    18,472.44x = 188,106,831.52
  5. Step 5: Solve for x
    x = 188,106,831.52/18,472.44
  6. Step 6: Final answer
    x = 10,183.11

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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.