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Finding the Third Proportional to 2,003.75 and 2,989

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Solution

The third proportional to 2,003.75 and 2,989 is: 4,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,003.75 : 2,989 = 2,989 : x
  2. Step 2: Convert to fraction form
    2,003.75/2,989 = 2,989/x
  3. Step 3: Cross multiply
    2,003.75x = 2,989 × 2,989
  4. Step 4: Simplify right side
    2,003.75x = 8,934,121
  5. Step 5: Solve for x
    x = 8,934,121/2,003.75
  6. Step 6: Final answer
    x = 4,458.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.