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Finding the Fourth Proportional to 199,618.68, 275,469.66 and 108,976.44

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Solution

The fourth proportional to 199,618.68, 275,469.66 and 108,976.44 is: 150,385.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,618.68 : 275,469.66 = 108,976.44 : x
  2. Step 2: Convert to fraction form
    199,618.68/275,469.66 = 108,976.44/x
  3. Step 3: Cross multiply
    199,618.68x = 275,469.66 × 108,976.44
  4. Step 4: Simplify right side
    199,618.68x = 30,019,702,874.81
  5. Step 5: Solve for x
    x = 30,019,702,874.81/199,618.68
  6. Step 6: Final answer
    x = 150,385.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.