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Finding the Fourth Proportional to 111,572.67, 167,379.66 and 66,672.36

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Solution

The fourth proportional to 111,572.67, 167,379.66 and 66,672.36 is: 100,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,572.67 : 167,379.66 = 66,672.36 : x
  2. Step 2: Convert to fraction form
    111,572.67/167,379.66 = 66,672.36/x
  3. Step 3: Cross multiply
    111,572.67x = 167,379.66 × 66,672.36
  4. Step 4: Simplify right side
    111,572.67x = 11,159,596,948.20
  5. Step 5: Solve for x
    x = 11,159,596,948.20/111,572.67
  6. Step 6: Final answer
    x = 100,020.88

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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.