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Finding the Fourth Proportional to 19,638, 27,095.96 and 11,138.09

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Solution

The fourth proportional to 19,638, 27,095.96 and 11,138.09 is: 15,368.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638 : 27,095.96 = 11,138.09 : x
  2. Step 2: Convert to fraction form
    19,638/27,095.96 = 11,138.09/x
  3. Step 3: Cross multiply
    19,638x = 27,095.96 × 11,138.09
  4. Step 4: Simplify right side
    19,638x = 301,797,049.95
  5. Step 5: Solve for x
    x = 301,797,049.95/19,638
  6. Step 6: Final answer
    x = 15,368.01

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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.