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Finding the Fourth Proportional to 1,978,542.60, 2,967,230.70 and 780,066.60

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Solution

The fourth proportional to 1,978,542.60, 2,967,230.70 and 780,066.60 is: 1,169,869.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,542.60 : 2,967,230.70 = 780,066.60 : x
  2. Step 2: Convert to fraction form
    1,978,542.60/2,967,230.70 = 780,066.60/x
  3. Step 3: Cross multiply
    1,978,542.60x = 2,967,230.70 × 780,066.60
  4. Step 4: Simplify right side
    1,978,542.60x = 2,314,637,563,564.62
  5. Step 5: Solve for x
    x = 2,314,637,563,564.62/1,978,542.60
  6. Step 6: Final answer
    x = 1,169,869.97

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