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Finding the Fourth Proportional to 11,969.76, 17,962.83 and 4,178.57

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Solution

The fourth proportional to 11,969.76, 17,962.83 and 4,178.57 is: 6,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.76 : 17,962.83 = 4,178.57 : x
  2. Step 2: Convert to fraction form
    11,969.76/17,962.83 = 4,178.57/x
  3. Step 3: Cross multiply
    11,969.76x = 17,962.83 × 4,178.57
  4. Step 4: Simplify right side
    11,969.76x = 75,058,852.74
  5. Step 5: Solve for x
    x = 75,058,852.74/11,969.76
  6. Step 6: Final answer
    x = 6,270.71

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