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Finding the Third Proportional to 2,415 and 3,613

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Solution

The third proportional to 2,415 and 3,613 is: 5,405.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415 : 3,613 = 3,613 : x
  2. Step 2: Convert to fraction form
    2,415/3,613 = 3,613/x
  3. Step 3: Cross multiply
    2,415x = 3,613 × 3,613
  4. Step 4: Simplify right side
    2,415x = 13,053,769
  5. Step 5: Solve for x
    x = 13,053,769/2,415
  6. Step 6: Final answer
    x = 5,405.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.