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Finding the Fourth Proportional to 11,862.64, 17,796.13 and 3,964.41

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Solution

The fourth proportional to 11,862.64, 17,796.13 and 3,964.41 is: 5,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.64 : 17,796.13 = 3,964.41 : x
  2. Step 2: Convert to fraction form
    11,862.64/17,796.13 = 3,964.41/x
  3. Step 3: Cross multiply
    11,862.64x = 17,796.13 × 3,964.41
  4. Step 4: Simplify right side
    11,862.64x = 70,551,046.93
  5. Step 5: Solve for x
    x = 70,551,046.93/11,862.64
  6. Step 6: Final answer
    x = 5,947.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.