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Finding the Fourth Proportional to 92,218.80, 138,328.20 and 54,821.10

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Solution

The fourth proportional to 92,218.80, 138,328.20 and 54,821.10 is: 82,231.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,218.80 : 138,328.20 = 54,821.10 : x
  2. Step 2: Convert to fraction form
    92,218.80/138,328.20 = 54,821.10/x
  3. Step 3: Cross multiply
    92,218.80x = 138,328.20 × 54,821.10
  4. Step 4: Simplify right side
    92,218.80x = 7,583,304,085.02
  5. Step 5: Solve for x
    x = 7,583,304,085.02/92,218.80
  6. Step 6: Final answer
    x = 82,231.65

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