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Finding the Third Proportional to 3,653.44 and 7,890.75

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Solution

The third proportional to 3,653.44 and 7,890.75 is: 17,042.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.44 : 7,890.75 = 7,890.75 : x
  2. Step 2: Convert to fraction form
    3,653.44/7,890.75 = 7,890.75/x
  3. Step 3: Cross multiply
    3,653.44x = 7,890.75 × 7,890.75
  4. Step 4: Simplify right side
    3,653.44x = 62,263,935.56
  5. Step 5: Solve for x
    x = 62,263,935.56/3,653.44
  6. Step 6: Final answer
    x = 17,042.56

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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.