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Finding the Fourth Proportional to 107,816.40, 161,724.60 and 55,208.40

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Solution

The fourth proportional to 107,816.40, 161,724.60 and 55,208.40 is: 82,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,816.40 : 161,724.60 = 55,208.40 : x
  2. Step 2: Convert to fraction form
    107,816.40/161,724.60 = 55,208.40/x
  3. Step 3: Cross multiply
    107,816.40x = 161,724.60 × 55,208.40
  4. Step 4: Simplify right side
    107,816.40x = 8,928,556,406.64
  5. Step 5: Solve for x
    x = 8,928,556,406.64/107,816.40
  6. Step 6: Final answer
    x = 82,812.60

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