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Finding the Third Proportional to 2,624 and 2,990

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Solution

The third proportional to 2,624 and 2,990 is: 3,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,624 : 2,990 = 2,990 : x
  2. Step 2: Convert to fraction form
    2,624/2,990 = 2,990/x
  3. Step 3: Cross multiply
    2,624x = 2,990 × 2,990
  4. Step 4: Simplify right side
    2,624x = 8,940,100
  5. Step 5: Solve for x
    x = 8,940,100/2,624
  6. Step 6: Final answer
    x = 3,407.05

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.