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Finding the Fourth Proportional to 11,309.78, 16,959.28 and 5,069.84

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Solution

The fourth proportional to 11,309.78, 16,959.28 and 5,069.84 is: 7,602.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,309.78 : 16,959.28 = 5,069.84 : x
  2. Step 2: Convert to fraction form
    11,309.78/16,959.28 = 5,069.84/x
  3. Step 3: Cross multiply
    11,309.78x = 16,959.28 × 5,069.84
  4. Step 4: Simplify right side
    11,309.78x = 85,980,865.84
  5. Step 5: Solve for x
    x = 85,980,865.84/11,309.78
  6. Step 6: Final answer
    x = 7,602.34

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