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Finding the Third Proportional to 1,908,517.78 and 4,159,976.91

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Solution

The third proportional to 1,908,517.78 and 4,159,976.91 is: 9,067,459.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908,517.78 : 4,159,976.91 = 4,159,976.91 : x
  2. Step 2: Convert to fraction form
    1,908,517.78/4,159,976.91 = 4,159,976.91/x
  3. Step 3: Cross multiply
    1,908,517.78x = 4,159,976.91 × 4,159,976.91
  4. Step 4: Simplify right side
    1,908,517.78x = 17,305,407,860,533.32
  5. Step 5: Solve for x
    x = 17,305,407,860,533.32/1,908,517.78
  6. Step 6: Final answer
    x = 9,067,459.59

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.