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Finding the Fourth Proportional to 67,421.94, 100,975.20 and 53,287.08

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Solution

The fourth proportional to 67,421.94, 100,975.20 and 53,287.08 is: 79,805.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,421.94 : 100,975.20 = 53,287.08 : x
  2. Step 2: Convert to fraction form
    67,421.94/100,975.20 = 53,287.08/x
  3. Step 3: Cross multiply
    67,421.94x = 100,975.20 × 53,287.08
  4. Step 4: Simplify right side
    67,421.94x = 5,380,673,560.42
  5. Step 5: Solve for x
    x = 5,380,673,560.42/67,421.94
  6. Step 6: Final answer
    x = 79,805.97

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