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Finding the Third Proportional to 855,515 and 1,858,837

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Solution

The third proportional to 855,515 and 1,858,837 is: 4,038,824.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,515 : 1,858,837 = 1,858,837 : x
  2. Step 2: Convert to fraction form
    855,515/1,858,837 = 1,858,837/x
  3. Step 3: Cross multiply
    855,515x = 1,858,837 × 1,858,837
  4. Step 4: Simplify right side
    855,515x = 3,455,274,992,569
  5. Step 5: Solve for x
    x = 3,455,274,992,569/855,515
  6. Step 6: Final answer
    x = 4,038,824.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.