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Finding the Fourth Proportional to 111,963.62, 154,498.37 and 68,936.28

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Solution

The fourth proportional to 111,963.62, 154,498.37 and 68,936.28 is: 95,125.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,963.62 : 154,498.37 = 68,936.28 : x
  2. Step 2: Convert to fraction form
    111,963.62/154,498.37 = 68,936.28/x
  3. Step 3: Cross multiply
    111,963.62x = 154,498.37 × 68,936.28
  4. Step 4: Simplify right side
    111,963.62x = 10,650,542,549.18
  5. Step 5: Solve for x
    x = 10,650,542,549.18/111,963.62
  6. Step 6: Final answer
    x = 95,125.03

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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.