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Finding the Third Proportional to 19,289 and 25,721.50

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Solution

The third proportional to 19,289 and 25,721.50 is: 34,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289 : 25,721.50 = 25,721.50 : x
  2. Step 2: Convert to fraction form
    19,289/25,721.50 = 25,721.50/x
  3. Step 3: Cross multiply
    19,289x = 25,721.50 × 25,721.50
  4. Step 4: Simplify right side
    19,289x = 661,595,562.25
  5. Step 5: Solve for x
    x = 661,595,562.25/19,289
  6. Step 6: Final answer
    x = 34,299.11

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.