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Finding the Third Proportional to 14,421 and 30,918

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Solution

The third proportional to 14,421 and 30,918 is: 66,286.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421 : 30,918 = 30,918 : x
  2. Step 2: Convert to fraction form
    14,421/30,918 = 30,918/x
  3. Step 3: Cross multiply
    14,421x = 30,918 × 30,918
  4. Step 4: Simplify right side
    14,421x = 955,922,724
  5. Step 5: Solve for x
    x = 955,922,724/14,421
  6. Step 6: Final answer
    x = 66,286.85

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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.