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Finding the Fourth Proportional to 109,537.20, 164,305.80 and 74,545.20

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Solution

The fourth proportional to 109,537.20, 164,305.80 and 74,545.20 is: 111,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,537.20 : 164,305.80 = 74,545.20 : x
  2. Step 2: Convert to fraction form
    109,537.20/164,305.80 = 74,545.20/x
  3. Step 3: Cross multiply
    109,537.20x = 164,305.80 × 74,545.20
  4. Step 4: Simplify right side
    109,537.20x = 12,248,208,722.16
  5. Step 5: Solve for x
    x = 12,248,208,722.16/109,537.20
  6. Step 6: Final answer
    x = 111,817.80

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