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Finding the Third Proportional to 2,120.34 and 4,761.70

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Solution

The third proportional to 2,120.34 and 4,761.70 is: 10,693.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.34 : 4,761.70 = 4,761.70 : x
  2. Step 2: Convert to fraction form
    2,120.34/4,761.70 = 4,761.70/x
  3. Step 3: Cross multiply
    2,120.34x = 4,761.70 × 4,761.70
  4. Step 4: Simplify right side
    2,120.34x = 22,673,816.65
  5. Step 5: Solve for x
    x = 22,673,816.65/2,120.34
  6. Step 6: Final answer
    x = 10,693.46

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.