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Finding the Fourth Proportional to 79,794.96, 119,696.54 and 20,631.14

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Solution

The fourth proportional to 79,794.96, 119,696.54 and 20,631.14 is: 30,947.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,794.96 : 119,696.54 = 20,631.14 : x
  2. Step 2: Convert to fraction form
    79,794.96/119,696.54 = 20,631.14/x
  3. Step 3: Cross multiply
    79,794.96x = 119,696.54 × 20,631.14
  4. Step 4: Simplify right side
    79,794.96x = 2,469,475,372.62
  5. Step 5: Solve for x
    x = 2,469,475,372.62/79,794.96
  6. Step 6: Final answer
    x = 30,947.76

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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.