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Finding the Fourth Proportional to 1,989,940.56, 2,984,619.23 and 978,791.10

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Solution

The fourth proportional to 1,989,940.56, 2,984,619.23 and 978,791.10 is: 1,468,043.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,940.56 : 2,984,619.23 = 978,791.10 : x
  2. Step 2: Convert to fraction form
    1,989,940.56/2,984,619.23 = 978,791.10/x
  3. Step 3: Cross multiply
    1,989,940.56x = 2,984,619.23 × 978,791.10
  4. Step 4: Simplify right side
    1,989,940.56x = 2,921,318,734,318.90
  5. Step 5: Solve for x
    x = 2,921,318,734,318.90/1,989,940.56
  6. Step 6: Final answer
    x = 1,468,043.21

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