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Finding the Fourth Proportional to 104,084.43, 155,963.11 and 80,449.82

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Solution

The fourth proportional to 104,084.43, 155,963.11 and 80,449.82 is: 120,548.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,084.43 : 155,963.11 = 80,449.82 : x
  2. Step 2: Convert to fraction form
    104,084.43/155,963.11 = 80,449.82/x
  3. Step 3: Cross multiply
    104,084.43x = 155,963.11 × 80,449.82
  4. Step 4: Simplify right side
    104,084.43x = 12,547,204,126.14
  5. Step 5: Solve for x
    x = 12,547,204,126.14/104,084.43
  6. Step 6: Final answer
    x = 120,548.33

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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.