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Finding the Third Proportional to 456 and 1,188

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Solution

The third proportional to 456 and 1,188 is: 3,095.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    456 : 1,188 = 1,188 : x
  2. Step 2: Convert to fraction form
    456/1,188 = 1,188/x
  3. Step 3: Cross multiply
    456x = 1,188 × 1,188
  4. Step 4: Simplify right side
    456x = 1,411,344
  5. Step 5: Solve for x
    x = 1,411,344/456
  6. Step 6: Final answer
    x = 3,095.05

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Why These Related Problems?

These problems maintain the same ratio (2.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.