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Finding the Third Proportional to 990 and 2,463

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Solution

The third proportional to 990 and 2,463 is: 6,127.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    990 : 2,463 = 2,463 : x
  2. Step 2: Convert to fraction form
    990/2,463 = 2,463/x
  3. Step 3: Cross multiply
    990x = 2,463 × 2,463
  4. Step 4: Simplify right side
    990x = 6,066,369
  5. Step 5: Solve for x
    x = 6,066,369/990
  6. Step 6: Final answer
    x = 6,127.65

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Why These Related Problems?

These problems maintain the same ratio (2.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.