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Finding the Third Proportional to 2,990 and 4,462

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Solution

The third proportional to 2,990 and 4,462 is: 6,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990 : 4,462 = 4,462 : x
  2. Step 2: Convert to fraction form
    2,990/4,462 = 4,462/x
  3. Step 3: Cross multiply
    2,990x = 4,462 × 4,462
  4. Step 4: Simplify right side
    2,990x = 19,909,444
  5. Step 5: Solve for x
    x = 19,909,444/2,990
  6. Step 6: Final answer
    x = 6,658.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.