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Finding the Third Proportional to 916,782.75 and 1,991,335.50

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Solution

The third proportional to 916,782.75 and 1,991,335.50 is: 4,325,361.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,782.75 : 1,991,335.50 = 1,991,335.50 : x
  2. Step 2: Convert to fraction form
    916,782.75/1,991,335.50 = 1,991,335.50/x
  3. Step 3: Cross multiply
    916,782.75x = 1,991,335.50 × 1,991,335.50
  4. Step 4: Simplify right side
    916,782.75x = 3,965,417,073,560.25
  5. Step 5: Solve for x
    x = 3,965,417,073,560.25/916,782.75
  6. Step 6: Final answer
    x = 4,325,361.79

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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.