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Finding the Third Proportional to 19,641 and 25,209

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Solution

The third proportional to 19,641 and 25,209 is: 32,355.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641 : 25,209 = 25,209 : x
  2. Step 2: Convert to fraction form
    19,641/25,209 = 25,209/x
  3. Step 3: Cross multiply
    19,641x = 25,209 × 25,209
  4. Step 4: Simplify right side
    19,641x = 635,493,681
  5. Step 5: Solve for x
    x = 635,493,681/19,641
  6. Step 6: Final answer
    x = 32,355.46

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.