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Finding the Third Proportional to 2,986.50 and 6,555

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Solution

The third proportional to 2,986.50 and 6,555 is: 14,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.50 : 6,555 = 6,555 : x
  2. Step 2: Convert to fraction form
    2,986.50/6,555 = 6,555/x
  3. Step 3: Cross multiply
    2,986.50x = 6,555 × 6,555
  4. Step 4: Simplify right side
    2,986.50x = 42,968,025
  5. Step 5: Solve for x
    x = 42,968,025/2,986.50
  6. Step 6: Final answer
    x = 14,387.42

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.