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Finding the Fourth Proportional to 49,616.40, 74,424.60 and 12,680.40

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Solution

The fourth proportional to 49,616.40, 74,424.60 and 12,680.40 is: 19,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,616.40 : 74,424.60 = 12,680.40 : x
  2. Step 2: Convert to fraction form
    49,616.40/74,424.60 = 12,680.40/x
  3. Step 3: Cross multiply
    49,616.40x = 74,424.60 × 12,680.40
  4. Step 4: Simplify right side
    49,616.40x = 943,733,697.84
  5. Step 5: Solve for x
    x = 943,733,697.84/49,616.40
  6. Step 6: Final answer
    x = 19,020.60

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