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Finding the Third Proportional to 2,616 and 4,039.50

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Solution

The third proportional to 2,616 and 4,039.50 is: 6,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616 : 4,039.50 = 4,039.50 : x
  2. Step 2: Convert to fraction form
    2,616/4,039.50 = 4,039.50/x
  3. Step 3: Cross multiply
    2,616x = 4,039.50 × 4,039.50
  4. Step 4: Simplify right side
    2,616x = 16,317,560.25
  5. Step 5: Solve for x
    x = 16,317,560.25/2,616
  6. Step 6: Final answer
    x = 6,237.60

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.