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Finding the Third Proportional to 2,005 and 4,730

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Solution

The third proportional to 2,005 and 4,730 is: 11,158.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005 : 4,730 = 4,730 : x
  2. Step 2: Convert to fraction form
    2,005/4,730 = 4,730/x
  3. Step 3: Cross multiply
    2,005x = 4,730 × 4,730
  4. Step 4: Simplify right side
    2,005x = 22,372,900
  5. Step 5: Solve for x
    x = 22,372,900/2,005
  6. Step 6: Final answer
    x = 11,158.55

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.