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Finding the Third Proportional to 3,085 and 4,518

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Solution

The third proportional to 3,085 and 4,518 is: 6,616.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085 : 4,518 = 4,518 : x
  2. Step 2: Convert to fraction form
    3,085/4,518 = 4,518/x
  3. Step 3: Cross multiply
    3,085x = 4,518 × 4,518
  4. Step 4: Simplify right side
    3,085x = 20,412,324
  5. Step 5: Solve for x
    x = 20,412,324/3,085
  6. Step 6: Final answer
    x = 6,616.64

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.