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Finding the Third Proportional to 3,615 and 5,043

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Solution

The third proportional to 3,615 and 5,043 is: 7,035.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615 : 5,043 = 5,043 : x
  2. Step 2: Convert to fraction form
    3,615/5,043 = 5,043/x
  3. Step 3: Cross multiply
    3,615x = 5,043 × 5,043
  4. Step 4: Simplify right side
    3,615x = 25,431,849
  5. Step 5: Solve for x
    x = 25,431,849/3,615
  6. Step 6: Final answer
    x = 7,035.09

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.