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Finding the Third Proportional to 2,980 and 4,707

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Solution

The third proportional to 2,980 and 4,707 is: 7,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980 : 4,707 = 4,707 : x
  2. Step 2: Convert to fraction form
    2,980/4,707 = 4,707/x
  3. Step 3: Cross multiply
    2,980x = 4,707 × 4,707
  4. Step 4: Simplify right side
    2,980x = 22,155,849
  5. Step 5: Solve for x
    x = 22,155,849/2,980
  6. Step 6: Final answer
    x = 7,434.85

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.