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Finding the Fourth Proportional to 167,614.78, 231,357.42 and 99,679.54

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Solution

The fourth proportional to 167,614.78, 231,357.42 and 99,679.54 is: 137,586.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,614.78 : 231,357.42 = 99,679.54 : x
  2. Step 2: Convert to fraction form
    167,614.78/231,357.42 = 99,679.54/x
  3. Step 3: Cross multiply
    167,614.78x = 231,357.42 × 99,679.54
  4. Step 4: Simplify right side
    167,614.78x = 23,061,601,201.19
  5. Step 5: Solve for x
    x = 23,061,601,201.19/167,614.78
  6. Step 6: Final answer
    x = 137,586.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.