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Finding the Third Proportional to 3,085.50 and 6,639

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Solution

The third proportional to 3,085.50 and 6,639 is: 14,284.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.50 : 6,639 = 6,639 : x
  2. Step 2: Convert to fraction form
    3,085.50/6,639 = 6,639/x
  3. Step 3: Cross multiply
    3,085.50x = 6,639 × 6,639
  4. Step 4: Simplify right side
    3,085.50x = 44,076,321
  5. Step 5: Solve for x
    x = 44,076,321/3,085.50
  6. Step 6: Final answer
    x = 14,284.98

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.