Home / 1,221,172.50-1,868,022.75

Finding the Third Proportional to 1,221,172.50 and 1,868,022.75

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Solution

The third proportional to 1,221,172.50 and 1,868,022.75 is: 2,857,507.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,172.50 : 1,868,022.75 = 1,868,022.75 : x
  2. Step 2: Convert to fraction form
    1,221,172.50/1,868,022.75 = 1,868,022.75/x
  3. Step 3: Cross multiply
    1,221,172.50x = 1,868,022.75 × 1,868,022.75
  4. Step 4: Simplify right side
    1,221,172.50x = 3,489,508,994,517.56
  5. Step 5: Solve for x
    x = 3,489,508,994,517.56/1,221,172.50
  6. Step 6: Final answer
    x = 2,857,507.02

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.