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Finding the Third Proportional to 463.50 and 991

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Solution

The third proportional to 463.50 and 991 is: 2,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.50 : 991 = 991 : x
  2. Step 2: Convert to fraction form
    463.50/991 = 991/x
  3. Step 3: Cross multiply
    463.50x = 991 × 991
  4. Step 4: Simplify right side
    463.50x = 982,081
  5. Step 5: Solve for x
    x = 982,081/463.50
  6. Step 6: Final answer
    x = 2,118.84

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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.