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Finding the Fourth Proportional to 111,660.65, 167,419.21 and 73,665.97

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Solution

The fourth proportional to 111,660.65, 167,419.21 and 73,665.97 is: 110,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,660.65 : 167,419.21 = 73,665.97 : x
  2. Step 2: Convert to fraction form
    111,660.65/167,419.21 = 73,665.97/x
  3. Step 3: Cross multiply
    111,660.65x = 167,419.21 × 73,665.97
  4. Step 4: Simplify right side
    111,660.65x = 12,333,097,898.57
  5. Step 5: Solve for x
    x = 12,333,097,898.57/111,660.65
  6. Step 6: Final answer
    x = 110,451.60

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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.