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Finding the Third Proportional to 7,641 and 16,740

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Solution

The third proportional to 7,641 and 16,740 is: 36,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,641 : 16,740 = 16,740 : x
  2. Step 2: Convert to fraction form
    7,641/16,740 = 16,740/x
  3. Step 3: Cross multiply
    7,641x = 16,740 × 16,740
  4. Step 4: Simplify right side
    7,641x = 280,227,600
  5. Step 5: Solve for x
    x = 280,227,600/7,641
  6. Step 6: Final answer
    x = 36,674.20

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.