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Finding the Fourth Proportional to 79,920.73, 119,846.94 and 29,966.21

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Solution

The fourth proportional to 79,920.73, 119,846.94 and 29,966.21 is: 44,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920.73 : 119,846.94 = 29,966.21 : x
  2. Step 2: Convert to fraction form
    79,920.73/119,846.94 = 29,966.21/x
  3. Step 3: Cross multiply
    79,920.73x = 119,846.94 × 29,966.21
  4. Step 4: Simplify right side
    79,920.73x = 3,591,358,571.90
  5. Step 5: Solve for x
    x = 3,591,358,571.90/79,920.73
  6. Step 6: Final answer
    x = 44,936.51

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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.