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Finding the Third Proportional to 1,953 and 4,135

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Solution

The third proportional to 1,953 and 4,135 is: 8,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953 : 4,135 = 4,135 : x
  2. Step 2: Convert to fraction form
    1,953/4,135 = 4,135/x
  3. Step 3: Cross multiply
    1,953x = 4,135 × 4,135
  4. Step 4: Simplify right side
    1,953x = 17,098,225
  5. Step 5: Solve for x
    x = 17,098,225/1,953
  6. Step 6: Final answer
    x = 8,754.85

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.