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Finding the Third Proportional to 19,690 and 27,575

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Solution

The third proportional to 19,690 and 27,575 is: 38,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690 : 27,575 = 27,575 : x
  2. Step 2: Convert to fraction form
    19,690/27,575 = 27,575/x
  3. Step 3: Cross multiply
    19,690x = 27,575 × 27,575
  4. Step 4: Simplify right side
    19,690x = 760,380,625
  5. Step 5: Solve for x
    x = 760,380,625/19,690
  6. Step 6: Final answer
    x = 38,617.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.