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Finding the Third Proportional to 1,956 and 4,224

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Solution

The third proportional to 1,956 and 4,224 is: 9,121.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956 : 4,224 = 4,224 : x
  2. Step 2: Convert to fraction form
    1,956/4,224 = 4,224/x
  3. Step 3: Cross multiply
    1,956x = 4,224 × 4,224
  4. Step 4: Simplify right side
    1,956x = 17,842,176
  5. Step 5: Solve for x
    x = 17,842,176/1,956
  6. Step 6: Final answer
    x = 9,121.77

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.