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Finding the Third Proportional to 484 and 1,157

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Solution

The third proportional to 484 and 1,157 is: 2,765.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484 : 1,157 = 1,157 : x
  2. Step 2: Convert to fraction form
    484/1,157 = 1,157/x
  3. Step 3: Cross multiply
    484x = 1,157 × 1,157
  4. Step 4: Simplify right side
    484x = 1,338,649
  5. Step 5: Solve for x
    x = 1,338,649/484
  6. Step 6: Final answer
    x = 2,765.80

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.