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Finding the Third Proportional to 455.75 and 1,196.75

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Solution

The third proportional to 455.75 and 1,196.75 is: 3,142.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.75 : 1,196.75 = 1,196.75 : x
  2. Step 2: Convert to fraction form
    455.75/1,196.75 = 1,196.75/x
  3. Step 3: Cross multiply
    455.75x = 1,196.75 × 1,196.75
  4. Step 4: Simplify right side
    455.75x = 1,432,210.56
  5. Step 5: Solve for x
    x = 1,432,210.56/455.75
  6. Step 6: Final answer
    x = 3,142.54

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Why These Related Problems?

These problems maintain the same ratio (2.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.