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Finding the Third Proportional to 1,400.75 and 1,697.75

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Solution

The third proportional to 1,400.75 and 1,697.75 is: 2,057.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.75 : 1,697.75 = 1,697.75 : x
  2. Step 2: Convert to fraction form
    1,400.75/1,697.75 = 1,697.75/x
  3. Step 3: Cross multiply
    1,400.75x = 1,697.75 × 1,697.75
  4. Step 4: Simplify right side
    1,400.75x = 2,882,355.06
  5. Step 5: Solve for x
    x = 2,882,355.06/1,400.75
  6. Step 6: Final answer
    x = 2,057.72

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.