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Finding the Fourth Proportional to 77,680.60, 116,520.90 and 33,299.80

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Solution

The fourth proportional to 77,680.60, 116,520.90 and 33,299.80 is: 49,949.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,680.60 : 116,520.90 = 33,299.80 : x
  2. Step 2: Convert to fraction form
    77,680.60/116,520.90 = 33,299.80/x
  3. Step 3: Cross multiply
    77,680.60x = 116,520.90 × 33,299.80
  4. Step 4: Simplify right side
    77,680.60x = 3,880,122,665.82
  5. Step 5: Solve for x
    x = 3,880,122,665.82/77,680.60
  6. Step 6: Final answer
    x = 49,949.70

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