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Finding the Fourth Proportional to 111,639.60, 167,456.70 and 67,232.70

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Solution

The fourth proportional to 111,639.60, 167,456.70 and 67,232.70 is: 100,847.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,639.60 : 167,456.70 = 67,232.70 : x
  2. Step 2: Convert to fraction form
    111,639.60/167,456.70 = 67,232.70/x
  3. Step 3: Cross multiply
    111,639.60x = 167,456.70 × 67,232.70
  4. Step 4: Simplify right side
    111,639.60x = 11,258,566,074.09
  5. Step 5: Solve for x
    x = 11,258,566,074.09/111,639.60
  6. Step 6: Final answer
    x = 100,847.42

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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.