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Finding the Third Proportional to 17,968.50 and 38,421

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Solution

The third proportional to 17,968.50 and 38,421 is: 82,153.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,968.50 : 38,421 = 38,421 : x
  2. Step 2: Convert to fraction form
    17,968.50/38,421 = 38,421/x
  3. Step 3: Cross multiply
    17,968.50x = 38,421 × 38,421
  4. Step 4: Simplify right side
    17,968.50x = 1,476,173,241
  5. Step 5: Solve for x
    x = 1,476,173,241/17,968.50
  6. Step 6: Final answer
    x = 82,153.39

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.