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Finding the Third Proportional to 3,276,679.50 and 5,128,863.75

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Solution

The third proportional to 3,276,679.50 and 5,128,863.75 is: 8,028,018.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,276,679.50 : 5,128,863.75 = 5,128,863.75 : x
  2. Step 2: Convert to fraction form
    3,276,679.50/5,128,863.75 = 5,128,863.75/x
  3. Step 3: Cross multiply
    3,276,679.50x = 5,128,863.75 × 5,128,863.75
  4. Step 4: Simplify right side
    3,276,679.50x = 26,305,243,366,064.06
  5. Step 5: Solve for x
    x = 26,305,243,366,064.06/3,276,679.50
  6. Step 6: Final answer
    x = 8,028,018.42

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.