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Finding the Fourth Proportional to 19,470.72, 26,869.80 and 11,087.28

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Solution

The fourth proportional to 19,470.72, 26,869.80 and 11,087.28 is: 15,300.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,470.72 : 26,869.80 = 11,087.28 : x
  2. Step 2: Convert to fraction form
    19,470.72/26,869.80 = 11,087.28/x
  3. Step 3: Cross multiply
    19,470.72x = 26,869.80 × 11,087.28
  4. Step 4: Simplify right side
    19,470.72x = 297,912,996.14
  5. Step 5: Solve for x
    x = 297,912,996.14/19,470.72
  6. Step 6: Final answer
    x = 15,300.56

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