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Finding the Fourth Proportional to 13,871.74, 20,815.80 and 7,298.44

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Solution

The fourth proportional to 13,871.74, 20,815.80 and 7,298.44 is: 10,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.74 : 20,815.80 = 7,298.44 : x
  2. Step 2: Convert to fraction form
    13,871.74/20,815.80 = 7,298.44/x
  3. Step 3: Cross multiply
    13,871.74x = 20,815.80 × 7,298.44
  4. Step 4: Simplify right side
    13,871.74x = 151,922,867.35
  5. Step 5: Solve for x
    x = 151,922,867.35/13,871.74
  6. Step 6: Final answer
    x = 10,951.97

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