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Finding the Fourth Proportional to 99,626.20, 149,439.30 and 79,943.20

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Solution

The fourth proportional to 99,626.20, 149,439.30 and 79,943.20 is: 119,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,626.20 : 149,439.30 = 79,943.20 : x
  2. Step 2: Convert to fraction form
    99,626.20/149,439.30 = 79,943.20/x
  3. Step 3: Cross multiply
    99,626.20x = 149,439.30 × 79,943.20
  4. Step 4: Simplify right side
    99,626.20x = 11,946,655,847.76
  5. Step 5: Solve for x
    x = 11,946,655,847.76/99,626.20
  6. Step 6: Final answer
    x = 119,914.80

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