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Finding the Third Proportional to 734.50 and 1,292

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Solution

The third proportional to 734.50 and 1,292 is: 2,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.50 : 1,292 = 1,292 : x
  2. Step 2: Convert to fraction form
    734.50/1,292 = 1,292/x
  3. Step 3: Cross multiply
    734.50x = 1,292 × 1,292
  4. Step 4: Simplify right side
    734.50x = 1,669,264
  5. Step 5: Solve for x
    x = 1,669,264/734.50
  6. Step 6: Final answer
    x = 2,272.65

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.