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Finding the Fourth Proportional to 111,738.90, 167,616.45 and 67,269.90

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Solution

The fourth proportional to 111,738.90, 167,616.45 and 67,269.90 is: 100,909.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,738.90 : 167,616.45 = 67,269.90 : x
  2. Step 2: Convert to fraction form
    111,738.90/167,616.45 = 67,269.90/x
  3. Step 3: Cross multiply
    111,738.90x = 167,616.45 × 67,269.90
  4. Step 4: Simplify right side
    111,738.90x = 11,275,541,829.86
  5. Step 5: Solve for x
    x = 11,275,541,829.86/111,738.90
  6. Step 6: Final answer
    x = 100,909.73

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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.