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Finding the Third Proportional to 740 and 1,126

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Solution

The third proportional to 740 and 1,126 is: 1,713.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    740 : 1,126 = 1,126 : x
  2. Step 2: Convert to fraction form
    740/1,126 = 1,126/x
  3. Step 3: Cross multiply
    740x = 1,126 × 1,126
  4. Step 4: Simplify right side
    740x = 1,267,876
  5. Step 5: Solve for x
    x = 1,267,876/740
  6. Step 6: Final answer
    x = 1,713.35

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.