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Finding the Third Proportional to 3,116,859.75 and 4,979,292.75

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Solution

The third proportional to 3,116,859.75 and 4,979,292.75 is: 7,954,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116,859.75 : 4,979,292.75 = 4,979,292.75 : x
  2. Step 2: Convert to fraction form
    3,116,859.75/4,979,292.75 = 4,979,292.75/x
  3. Step 3: Cross multiply
    3,116,859.75x = 4,979,292.75 × 4,979,292.75
  4. Step 4: Simplify right side
    3,116,859.75x = 24,793,356,290,202.56
  5. Step 5: Solve for x
    x = 24,793,356,290,202.56/3,116,859.75
  6. Step 6: Final answer
    x = 7,954,594.78

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.