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Finding the Fourth Proportional to 192,175.80, 287,874.90 and 133,078.20

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Solution

The fourth proportional to 192,175.80, 287,874.90 and 133,078.20 is: 199,348.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,175.80 : 287,874.90 = 133,078.20 : x
  2. Step 2: Convert to fraction form
    192,175.80/287,874.90 = 133,078.20/x
  3. Step 3: Cross multiply
    192,175.80x = 287,874.90 × 133,078.20
  4. Step 4: Simplify right side
    192,175.80x = 38,309,873,517.18
  5. Step 5: Solve for x
    x = 38,309,873,517.18/192,175.80
  6. Step 6: Final answer
    x = 199,348.06

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1.5x scale

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.