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Finding the Fourth Proportional to 1,986,942.70, 2,978,616.84 and 724,475.08

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Solution

The fourth proportional to 1,986,942.70, 2,978,616.84 and 724,475.08 is: 1,086,057.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,942.70 : 2,978,616.84 = 724,475.08 : x
  2. Step 2: Convert to fraction form
    1,986,942.70/2,978,616.84 = 724,475.08/x
  3. Step 3: Cross multiply
    1,986,942.70x = 2,978,616.84 × 724,475.08
  4. Step 4: Simplify right side
    1,986,942.70x = 2,157,933,673,448.35
  5. Step 5: Solve for x
    x = 2,157,933,673,448.35/1,986,942.70
  6. Step 6: Final answer
    x = 1,086,057.32

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