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Finding the Fourth Proportional to 43,256.70, 64,872.90 and 13,683.60

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Solution

The fourth proportional to 43,256.70, 64,872.90 and 13,683.60 is: 20,521.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,256.70 : 64,872.90 = 13,683.60 : x
  2. Step 2: Convert to fraction form
    43,256.70/64,872.90 = 13,683.60/x
  3. Step 3: Cross multiply
    43,256.70x = 64,872.90 × 13,683.60
  4. Step 4: Simplify right side
    43,256.70x = 887,694,814.44
  5. Step 5: Solve for x
    x = 887,694,814.44/43,256.70
  6. Step 6: Final answer
    x = 20,521.56

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