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Finding the Fourth Proportional to 111,481.40, 167,222.10 and 74,091.80

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Solution

The fourth proportional to 111,481.40, 167,222.10 and 74,091.80 is: 111,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,481.40 : 167,222.10 = 74,091.80 : x
  2. Step 2: Convert to fraction form
    111,481.40/167,222.10 = 74,091.80/x
  3. Step 3: Cross multiply
    111,481.40x = 167,222.10 × 74,091.80
  4. Step 4: Simplify right side
    111,481.40x = 12,389,786,388.78
  5. Step 5: Solve for x
    x = 12,389,786,388.78/111,481.40
  6. Step 6: Final answer
    x = 111,137.70

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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.