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Finding the Fourth Proportional to 104,632.80, 156,949.20 and 55,480.80

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Solution

The fourth proportional to 104,632.80, 156,949.20 and 55,480.80 is: 83,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,632.80 : 156,949.20 = 55,480.80 : x
  2. Step 2: Convert to fraction form
    104,632.80/156,949.20 = 55,480.80/x
  3. Step 3: Cross multiply
    104,632.80x = 156,949.20 × 55,480.80
  4. Step 4: Simplify right side
    104,632.80x = 8,707,667,175.36
  5. Step 5: Solve for x
    x = 8,707,667,175.36/104,632.80
  6. Step 6: Final answer
    x = 83,221.20

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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.