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Finding the Third Proportional to 1,165.50 and 1,371

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Solution

The third proportional to 1,165.50 and 1,371 is: 1,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.50 : 1,371 = 1,371 : x
  2. Step 2: Convert to fraction form
    1,165.50/1,371 = 1,371/x
  3. Step 3: Cross multiply
    1,165.50x = 1,371 × 1,371
  4. Step 4: Simplify right side
    1,165.50x = 1,879,641
  5. Step 5: Solve for x
    x = 1,879,641/1,165.50
  6. Step 6: Final answer
    x = 1,612.73

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.