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Finding the Fourth Proportional to 96,990.63, 133,908.56 and 66,414.88

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Solution

The fourth proportional to 96,990.63, 133,908.56 and 66,414.88 is: 91,694.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,990.63 : 133,908.56 = 66,414.88 : x
  2. Step 2: Convert to fraction form
    96,990.63/133,908.56 = 66,414.88/x
  3. Step 3: Cross multiply
    96,990.63x = 133,908.56 × 66,414.88
  4. Step 4: Simplify right side
    96,990.63x = 8,893,520,611.30
  5. Step 5: Solve for x
    x = 8,893,520,611.30/96,990.63
  6. Step 6: Final answer
    x = 91,694.64

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