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Finding the Fourth Proportional to 111,964.12, 154,499.06 and 68,936.78

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Solution

The fourth proportional to 111,964.12, 154,499.06 and 68,936.78 is: 95,125.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,964.12 : 154,499.06 = 68,936.78 : x
  2. Step 2: Convert to fraction form
    111,964.12/154,499.06 = 68,936.78/x
  3. Step 3: Cross multiply
    111,964.12x = 154,499.06 × 68,936.78
  4. Step 4: Simplify right side
    111,964.12x = 10,650,667,709.43
  5. Step 5: Solve for x
    x = 10,650,667,709.43/111,964.12
  6. Step 6: Final answer
    x = 95,125.72

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