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Finding the Third Proportional to 207,697 and 311,200

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Solution

The third proportional to 207,697 and 311,200 is: 466,282.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,697 : 311,200 = 311,200 : x
  2. Step 2: Convert to fraction form
    207,697/311,200 = 311,200/x
  3. Step 3: Cross multiply
    207,697x = 311,200 × 311,200
  4. Step 4: Simplify right side
    207,697x = 96,845,440,000
  5. Step 5: Solve for x
    x = 96,845,440,000/207,697
  6. Step 6: Final answer
    x = 466,282.32

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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.