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Finding the Fourth Proportional to 280,009.40, 419,745.30 and 92,924.60

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Solution

The fourth proportional to 280,009.40, 419,745.30 and 92,924.60 is: 139,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,009.40 : 419,745.30 = 92,924.60 : x
  2. Step 2: Convert to fraction form
    280,009.40/419,745.30 = 92,924.60/x
  3. Step 3: Cross multiply
    280,009.40x = 419,745.30 × 92,924.60
  4. Step 4: Simplify right side
    280,009.40x = 39,004,664,104.38
  5. Step 5: Solve for x
    x = 39,004,664,104.38/280,009.40
  6. Step 6: Final answer
    x = 139,297.70

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