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Finding the Fourth Proportional to 277,785.20, 416,677.80 and 90,815.60

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Solution

The fourth proportional to 277,785.20, 416,677.80 and 90,815.60 is: 136,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,785.20 : 416,677.80 = 90,815.60 : x
  2. Step 2: Convert to fraction form
    277,785.20/416,677.80 = 90,815.60/x
  3. Step 3: Cross multiply
    277,785.20x = 416,677.80 × 90,815.60
  4. Step 4: Simplify right side
    277,785.20x = 37,840,844,413.68
  5. Step 5: Solve for x
    x = 37,840,844,413.68/277,785.20
  6. Step 6: Final answer
    x = 136,223.40

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