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Finding the Fourth Proportional to 111,205.80, 166,581.90 and 68,956.20

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Solution

The fourth proportional to 111,205.80, 166,581.90 and 68,956.20 is: 103,293.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,205.80 : 166,581.90 = 68,956.20 : x
  2. Step 2: Convert to fraction form
    111,205.80/166,581.90 = 68,956.20/x
  3. Step 3: Cross multiply
    111,205.80x = 166,581.90 × 68,956.20
  4. Step 4: Simplify right side
    111,205.80x = 11,486,854,812.78
  5. Step 5: Solve for x
    x = 11,486,854,812.78/111,205.80
  6. Step 6: Final answer
    x = 103,293.67

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