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Finding the Fourth Proportional to 167,912.28, 251,664.30 and 79,061.76

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Solution

The fourth proportional to 167,912.28, 251,664.30 and 79,061.76 is: 118,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,912.28 : 251,664.30 = 79,061.76 : x
  2. Step 2: Convert to fraction form
    167,912.28/251,664.30 = 79,061.76/x
  3. Step 3: Cross multiply
    167,912.28x = 251,664.30 × 79,061.76
  4. Step 4: Simplify right side
    167,912.28x = 19,897,022,487.17
  5. Step 5: Solve for x
    x = 19,897,022,487.17/167,912.28
  6. Step 6: Final answer
    x = 118,496.53

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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.