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Finding the Third Proportional to 736.50 and 1,213

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Solution

The third proportional to 736.50 and 1,213 is: 1,997.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.50 : 1,213 = 1,213 : x
  2. Step 2: Convert to fraction form
    736.50/1,213 = 1,213/x
  3. Step 3: Cross multiply
    736.50x = 1,213 × 1,213
  4. Step 4: Simplify right side
    736.50x = 1,471,369
  5. Step 5: Solve for x
    x = 1,471,369/736.50
  6. Step 6: Final answer
    x = 1,997.79

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.