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Finding the Third Proportional to 4,128.75 and 11,179.13

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Solution

The third proportional to 4,128.75 and 11,179.13 is: 30,268.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.75 : 11,179.13 = 11,179.13 : x
  2. Step 2: Convert to fraction form
    4,128.75/11,179.13 = 11,179.13/x
  3. Step 3: Cross multiply
    4,128.75x = 11,179.13 × 11,179.13
  4. Step 4: Simplify right side
    4,128.75x = 124,972,835.77
  5. Step 5: Solve for x
    x = 124,972,835.77/4,128.75
  6. Step 6: Final answer
    x = 30,268.93

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.