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Finding the Fourth Proportional to 111,732.65, 167,571.42 and 66,766.85

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Solution

The fourth proportional to 111,732.65, 167,571.42 and 66,766.85 is: 100,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,732.65 : 167,571.42 = 66,766.85 : x
  2. Step 2: Convert to fraction form
    111,732.65/167,571.42 = 66,766.85/x
  3. Step 3: Cross multiply
    111,732.65x = 167,571.42 × 66,766.85
  4. Step 4: Simplify right side
    111,732.65x = 11,188,215,863.43
  5. Step 5: Solve for x
    x = 11,188,215,863.43/111,732.65
  6. Step 6: Final answer
    x = 100,133.81

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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.