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Finding the Fourth Proportional to 36,939.76, 55,410.76 and 11,979.12

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Solution

The fourth proportional to 36,939.76, 55,410.76 and 11,979.12 is: 17,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,939.76 : 55,410.76 = 11,979.12 : x
  2. Step 2: Convert to fraction form
    36,939.76/55,410.76 = 11,979.12/x
  3. Step 3: Cross multiply
    36,939.76x = 55,410.76 × 11,979.12
  4. Step 4: Simplify right side
    36,939.76x = 663,772,143.33
  5. Step 5: Solve for x
    x = 663,772,143.33/36,939.76
  6. Step 6: Final answer
    x = 17,969.04

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