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Finding the Fourth Proportional to 10,989.66, 16,479.90 and 6,823.44

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Solution

The fourth proportional to 10,989.66, 16,479.90 and 6,823.44 is: 10,232.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.66 : 16,479.90 = 6,823.44 : x
  2. Step 2: Convert to fraction form
    10,989.66/16,479.90 = 6,823.44/x
  3. Step 3: Cross multiply
    10,989.66x = 16,479.90 × 6,823.44
  4. Step 4: Simplify right side
    10,989.66x = 112,449,608.86
  5. Step 5: Solve for x
    x = 112,449,608.86/10,989.66
  6. Step 6: Final answer
    x = 10,232.31

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