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Finding the Fourth Proportional to 69.76, 104.69 and 67.02

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Solution

The fourth proportional to 69.76, 104.69 and 67.02 is: 100.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.76 : 104.69 = 67.02 : x
  2. Step 2: Convert to fraction form
    69.76/104.69 = 67.02/x
  3. Step 3: Cross multiply
    69.76x = 104.69 × 67.02
  4. Step 4: Simplify right side
    69.76x = 7,016.59
  5. Step 5: Solve for x
    x = 7,016.59/69.76
  6. Step 6: Final answer
    x = 100.59

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