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Finding the Third Proportional to 4,889.25 and 7,791.75

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Solution

The third proportional to 4,889.25 and 7,791.75 is: 12,417.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.25 : 7,791.75 = 7,791.75 : x
  2. Step 2: Convert to fraction form
    4,889.25/7,791.75 = 7,791.75/x
  3. Step 3: Cross multiply
    4,889.25x = 7,791.75 × 7,791.75
  4. Step 4: Simplify right side
    4,889.25x = 60,711,368.06
  5. Step 5: Solve for x
    x = 60,711,368.06/4,889.25
  6. Step 6: Final answer
    x = 12,417.32

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.