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Finding the Third Proportional to 3,086 and 4,415

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Solution

The third proportional to 3,086 and 4,415 is: 6,316.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086 : 4,415 = 4,415 : x
  2. Step 2: Convert to fraction form
    3,086/4,415 = 4,415/x
  3. Step 3: Cross multiply
    3,086x = 4,415 × 4,415
  4. Step 4: Simplify right side
    3,086x = 19,492,225
  5. Step 5: Solve for x
    x = 19,492,225/3,086
  6. Step 6: Final answer
    x = 6,316.34

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.