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Finding the Fourth Proportional to 167,428.08, 231,049.80 and 91,974.96

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Solution

The fourth proportional to 167,428.08, 231,049.80 and 91,974.96 is: 126,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,428.08 : 231,049.80 = 91,974.96 : x
  2. Step 2: Convert to fraction form
    167,428.08/231,049.80 = 91,974.96/x
  3. Step 3: Cross multiply
    167,428.08x = 231,049.80 × 91,974.96
  4. Step 4: Simplify right side
    167,428.08x = 21,250,796,113.01
  5. Step 5: Solve for x
    x = 21,250,796,113.01/167,428.08
  6. Step 6: Final answer
    x = 126,924.92

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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.