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Finding the Fourth Proportional to 98,906.78, 148,365.30 and 28,791.56

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Solution

The fourth proportional to 98,906.78, 148,365.30 and 28,791.56 is: 43,188.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,906.78 : 148,365.30 = 28,791.56 : x
  2. Step 2: Convert to fraction form
    98,906.78/148,365.30 = 28,791.56/x
  3. Step 3: Cross multiply
    98,906.78x = 148,365.30 × 28,791.56
  4. Step 4: Simplify right side
    98,906.78x = 4,271,668,436.87
  5. Step 5: Solve for x
    x = 4,271,668,436.87/98,906.78
  6. Step 6: Final answer
    x = 43,188.83

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