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Finding the Third Proportional to 14,638.75 and 21,918

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Solution

The third proportional to 14,638.75 and 21,918 is: 32,816.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,638.75 : 21,918 = 21,918 : x
  2. Step 2: Convert to fraction form
    14,638.75/21,918 = 21,918/x
  3. Step 3: Cross multiply
    14,638.75x = 21,918 × 21,918
  4. Step 4: Simplify right side
    14,638.75x = 480,398,724
  5. Step 5: Solve for x
    x = 480,398,724/14,638.75
  6. Step 6: Final answer
    x = 32,816.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.