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Finding the Fourth Proportional to 79,174.71, 118,745.64 and 29,220.66

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Solution

The fourth proportional to 79,174.71, 118,745.64 and 29,220.66 is: 43,824.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,174.71 : 118,745.64 = 29,220.66 : x
  2. Step 2: Convert to fraction form
    79,174.71/118,745.64 = 29,220.66/x
  3. Step 3: Cross multiply
    79,174.71x = 118,745.64 × 29,220.66
  4. Step 4: Simplify right side
    79,174.71x = 3,469,825,972.92
  5. Step 5: Solve for x
    x = 3,469,825,972.92/79,174.71
  6. Step 6: Final answer
    x = 43,824.93

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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.