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Finding the Third Proportional to 3,316.50 and 7,281

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Solution

The third proportional to 3,316.50 and 7,281 is: 15,984.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316.50 : 7,281 = 7,281 : x
  2. Step 2: Convert to fraction form
    3,316.50/7,281 = 7,281/x
  3. Step 3: Cross multiply
    3,316.50x = 7,281 × 7,281
  4. Step 4: Simplify right side
    3,316.50x = 53,012,961
  5. Step 5: Solve for x
    x = 53,012,961/3,316.50
  6. Step 6: Final answer
    x = 15,984.61

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.