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Finding the Third Proportional to 2,956.81 and 4,447.56

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Solution

The third proportional to 2,956.81 and 4,447.56 is: 6,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.81 : 4,447.56 = 4,447.56 : x
  2. Step 2: Convert to fraction form
    2,956.81/4,447.56 = 4,447.56/x
  3. Step 3: Cross multiply
    2,956.81x = 4,447.56 × 4,447.56
  4. Step 4: Simplify right side
    2,956.81x = 19,780,812.19
  5. Step 5: Solve for x
    x = 19,780,812.19/2,956.81
  6. Step 6: Final answer
    x = 6,689.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.