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Finding the Fourth Proportional to 104,626.80, 156,976.65 and 45,504.90

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Solution

The fourth proportional to 104,626.80, 156,976.65 and 45,504.90 is: 68,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,626.80 : 156,976.65 = 45,504.90 : x
  2. Step 2: Convert to fraction form
    104,626.80/156,976.65 = 45,504.90/x
  3. Step 3: Cross multiply
    104,626.80x = 156,976.65 × 45,504.90
  4. Step 4: Simplify right side
    104,626.80x = 7,143,206,760.59
  5. Step 5: Solve for x
    x = 7,143,206,760.59/104,626.80
  6. Step 6: Final answer
    x = 68,273.20

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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.