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Finding the Fourth Proportional to 19,266.28, 28,922.46 and 11,478.76

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Solution

The fourth proportional to 19,266.28, 28,922.46 and 11,478.76 is: 17,231.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.28 : 28,922.46 = 11,478.76 : x
  2. Step 2: Convert to fraction form
    19,266.28/28,922.46 = 11,478.76/x
  3. Step 3: Cross multiply
    19,266.28x = 28,922.46 × 11,478.76
  4. Step 4: Simplify right side
    19,266.28x = 331,993,976.95
  5. Step 5: Solve for x
    x = 331,993,976.95/19,266.28
  6. Step 6: Final answer
    x = 17,231.87

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