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Finding the Fourth Proportional to 268,246.80, 402,424.20 and 78,706.80

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Solution

The fourth proportional to 268,246.80, 402,424.20 and 78,706.80 is: 118,076.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,246.80 : 402,424.20 = 78,706.80 : x
  2. Step 2: Convert to fraction form
    268,246.80/402,424.20 = 78,706.80/x
  3. Step 3: Cross multiply
    268,246.80x = 402,424.20 × 78,706.80
  4. Step 4: Simplify right side
    268,246.80x = 31,673,521,024.56
  5. Step 5: Solve for x
    x = 31,673,521,024.56/268,246.80
  6. Step 6: Final answer
    x = 118,076.04

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