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Finding the Fourth Proportional to 74,172.97, 111,217.54 and 29,208.25

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Solution

The fourth proportional to 74,172.97, 111,217.54 and 29,208.25 is: 43,795.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,172.97 : 111,217.54 = 29,208.25 : x
  2. Step 2: Convert to fraction form
    74,172.97/111,217.54 = 29,208.25/x
  3. Step 3: Cross multiply
    74,172.97x = 111,217.54 × 29,208.25
  4. Step 4: Simplify right side
    74,172.97x = 3,248,469,778.71
  5. Step 5: Solve for x
    x = 3,248,469,778.71/74,172.97
  6. Step 6: Final answer
    x = 43,795.87

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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.