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Finding the Third Proportional to 1,965.50 and 4,309

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Solution

The third proportional to 1,965.50 and 4,309 is: 9,446.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.50 : 4,309 = 4,309 : x
  2. Step 2: Convert to fraction form
    1,965.50/4,309 = 4,309/x
  3. Step 3: Cross multiply
    1,965.50x = 4,309 × 4,309
  4. Step 4: Simplify right side
    1,965.50x = 18,567,481
  5. Step 5: Solve for x
    x = 18,567,481/1,965.50
  6. Step 6: Final answer
    x = 9,446.70

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.