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Finding the Third Proportional to 1,787.63 and 3,791.63

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Solution

The third proportional to 1,787.63 and 3,791.63 is: 8,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.63 : 3,791.63 = 3,791.63 : x
  2. Step 2: Convert to fraction form
    1,787.63/3,791.63 = 3,791.63/x
  3. Step 3: Cross multiply
    1,787.63x = 3,791.63 × 3,791.63
  4. Step 4: Simplify right side
    1,787.63x = 14,376,420.14
  5. Step 5: Solve for x
    x = 14,376,420.14/1,787.63
  6. Step 6: Final answer
    x = 8,042.19

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.