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Finding the Fourth Proportional to 13,582.99, 20,375.40 and 3,721.44

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Solution

The fourth proportional to 13,582.99, 20,375.40 and 3,721.44 is: 5,582.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.99 : 20,375.40 = 3,721.44 : x
  2. Step 2: Convert to fraction form
    13,582.99/20,375.40 = 3,721.44/x
  3. Step 3: Cross multiply
    13,582.99x = 20,375.40 × 3,721.44
  4. Step 4: Simplify right side
    13,582.99x = 75,825,828.58
  5. Step 5: Solve for x
    x = 75,825,828.58/13,582.99
  6. Step 6: Final answer
    x = 5,582.41

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