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Finding the Fourth Proportional to 22,913.91, 31,620.30 and 12,842.43

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Solution

The fourth proportional to 22,913.91, 31,620.30 and 12,842.43 is: 17,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,913.91 : 31,620.30 = 12,842.43 : x
  2. Step 2: Convert to fraction form
    22,913.91/31,620.30 = 12,842.43/x
  3. Step 3: Cross multiply
    22,913.91x = 31,620.30 × 12,842.43
  4. Step 4: Simplify right side
    22,913.91x = 406,081,489.33
  5. Step 5: Solve for x
    x = 406,081,489.33/22,913.91
  6. Step 6: Final answer
    x = 17,722.05

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