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Finding the Third Proportional to 2,930 and 4,971

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Solution

The third proportional to 2,930 and 4,971 is: 8,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930 : 4,971 = 4,971 : x
  2. Step 2: Convert to fraction form
    2,930/4,971 = 4,971/x
  3. Step 3: Cross multiply
    2,930x = 4,971 × 4,971
  4. Step 4: Simplify right side
    2,930x = 24,710,841
  5. Step 5: Solve for x
    x = 24,710,841/2,930
  6. Step 6: Final answer
    x = 8,433.73

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.