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Finding the Fourth Proportional to 5,420.63, 7,480.46 and 2,936.63

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Solution

The fourth proportional to 5,420.63, 7,480.46 and 2,936.63 is: 4,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.63 : 7,480.46 = 2,936.63 : x
  2. Step 2: Convert to fraction form
    5,420.63/7,480.46 = 2,936.63/x
  3. Step 3: Cross multiply
    5,420.63x = 7,480.46 × 2,936.63
  4. Step 4: Simplify right side
    5,420.63x = 21,967,313.19
  5. Step 5: Solve for x
    x = 21,967,313.19/5,420.63
  6. Step 6: Final answer
    x = 4,052.54

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