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Finding the Fourth Proportional to 19,676, 27,153.12 and 11,293.28

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Solution

The fourth proportional to 19,676, 27,153.12 and 11,293.28 is: 15,584.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,676 : 27,153.12 = 11,293.28 : x
  2. Step 2: Convert to fraction form
    19,676/27,153.12 = 11,293.28/x
  3. Step 3: Cross multiply
    19,676x = 27,153.12 × 11,293.28
  4. Step 4: Simplify right side
    19,676x = 306,647,787.03
  5. Step 5: Solve for x
    x = 306,647,787.03/19,676
  6. Step 6: Final answer
    x = 15,584.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.