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Finding the Fourth Proportional to 2,190,997.70, 3,286,496.55 and 2,190,997.70

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Solution

The fourth proportional to 2,190,997.70, 3,286,496.55 and 2,190,997.70 is: 3,286,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190,997.70 : 3,286,496.55 = 2,190,997.70 : x
  2. Step 2: Convert to fraction form
    2,190,997.70/3,286,496.55 = 2,190,997.70/x
  3. Step 3: Cross multiply
    2,190,997.70x = 3,286,496.55 × 2,190,997.70
  4. Step 4: Simplify right side
    2,190,997.70x = 7,200,706,382,107.94
  5. Step 5: Solve for x
    x = 7,200,706,382,107.94/2,190,997.70
  6. Step 6: Final answer
    x = 3,286,496.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.