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Finding the Third Proportional to 1,965 and 4,113

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Solution

The third proportional to 1,965 and 4,113 is: 8,609.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965 : 4,113 = 4,113 : x
  2. Step 2: Convert to fraction form
    1,965/4,113 = 4,113/x
  3. Step 3: Cross multiply
    1,965x = 4,113 × 4,113
  4. Step 4: Simplify right side
    1,965x = 16,916,769
  5. Step 5: Solve for x
    x = 16,916,769/1,965
  6. Step 6: Final answer
    x = 8,609.04

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.