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Finding the Fourth Proportional to 57,696.40, 86,544.60 and 49,920.40

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Solution

The fourth proportional to 57,696.40, 86,544.60 and 49,920.40 is: 74,880.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,696.40 : 86,544.60 = 49,920.40 : x
  2. Step 2: Convert to fraction form
    57,696.40/86,544.60 = 49,920.40/x
  3. Step 3: Cross multiply
    57,696.40x = 86,544.60 × 49,920.40
  4. Step 4: Simplify right side
    57,696.40x = 4,320,341,049.84
  5. Step 5: Solve for x
    x = 4,320,341,049.84/57,696.40
  6. Step 6: Final answer
    x = 74,880.60

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