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Finding the Third Proportional to 611.50 and 1,059

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Solution

The third proportional to 611.50 and 1,059 is: 1,833.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.50 : 1,059 = 1,059 : x
  2. Step 2: Convert to fraction form
    611.50/1,059 = 1,059/x
  3. Step 3: Cross multiply
    611.50x = 1,059 × 1,059
  4. Step 4: Simplify right side
    611.50x = 1,121,481
  5. Step 5: Solve for x
    x = 1,121,481/611.50
  6. Step 6: Final answer
    x = 1,833.98

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Why These Related Problems?

These problems maintain the same ratio (1.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.