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Finding the Third Proportional to 740 and 1,459

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Solution

The third proportional to 740 and 1,459 is: 2,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    740 : 1,459 = 1,459 : x
  2. Step 2: Convert to fraction form
    740/1,459 = 1,459/x
  3. Step 3: Cross multiply
    740x = 1,459 × 1,459
  4. Step 4: Simplify right side
    740x = 2,128,681
  5. Step 5: Solve for x
    x = 2,128,681/740
  6. Step 6: Final answer
    x = 2,876.60

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.