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Finding the Fourth Proportional to 111,920.96, 167,939.76 and 49,576.88

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Solution

The fourth proportional to 111,920.96, 167,939.76 and 49,576.88 is: 74,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,920.96 : 167,939.76 = 49,576.88 : x
  2. Step 2: Convert to fraction form
    111,920.96/167,939.76 = 49,576.88/x
  3. Step 3: Cross multiply
    111,920.96x = 167,939.76 × 49,576.88
  4. Step 4: Simplify right side
    111,920.96x = 8,325,928,489.05
  5. Step 5: Solve for x
    x = 8,325,928,489.05/111,920.96
  6. Step 6: Final answer
    x = 74,391.15

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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.