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Finding the Fourth Proportional to 81,978,731.80, 122,968,097.70 and 25,245,035.80

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Solution

The fourth proportional to 81,978,731.80, 122,968,097.70 and 25,245,035.80 is: 37,867,553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,978,731.80 : 122,968,097.70 = 25,245,035.80 : x
  2. Step 2: Convert to fraction form
    81,978,731.80/122,968,097.70 = 25,245,035.80/x
  3. Step 3: Cross multiply
    81,978,731.80x = 122,968,097.70 × 25,245,035.80
  4. Step 4: Simplify right side
    81,978,731.80x = 3,104,334,028,694,398
  5. Step 5: Solve for x
    x = 3,104,334,028,694,398/81,978,731.80
  6. Step 6: Final answer
    x = 37,867,553.70

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