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Finding the Fourth Proportional to 79,812.20, 119,708.70 and 33,060.20

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Solution

The fourth proportional to 79,812.20, 119,708.70 and 33,060.20 is: 49,586.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,812.20 : 119,708.70 = 33,060.20 : x
  2. Step 2: Convert to fraction form
    79,812.20/119,708.70 = 33,060.20/x
  3. Step 3: Cross multiply
    79,812.20x = 119,708.70 × 33,060.20
  4. Step 4: Simplify right side
    79,812.20x = 3,957,593,563.74
  5. Step 5: Solve for x
    x = 3,957,593,563.74/79,812.20
  6. Step 6: Final answer
    x = 49,586.32

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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.