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Finding the Third Proportional to 1,923 and 4,039.50

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Solution

The third proportional to 1,923 and 4,039.50 is: 8,485.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,923 : 4,039.50 = 4,039.50 : x
  2. Step 2: Convert to fraction form
    1,923/4,039.50 = 4,039.50/x
  3. Step 3: Cross multiply
    1,923x = 4,039.50 × 4,039.50
  4. Step 4: Simplify right side
    1,923x = 16,317,560.25
  5. Step 5: Solve for x
    x = 16,317,560.25/1,923
  6. Step 6: Final answer
    x = 8,485.47

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.