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Finding the Third Proportional to 307,400 and 461,100

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Solution

The third proportional to 307,400 and 461,100 is: 691,650

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,400 : 461,100 = 461,100 : x
  2. Step 2: Convert to fraction form
    307,400/461,100 = 461,100/x
  3. Step 3: Cross multiply
    307,400x = 461,100 × 461,100
  4. Step 4: Simplify right side
    307,400x = 212,613,210,000
  5. Step 5: Solve for x
    x = 212,613,210,000/307,400
  6. Step 6: Final answer
    x = 691,650

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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.