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Finding the Third Proportional to 4,786 and 7,617

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Solution

The third proportional to 4,786 and 7,617 is: 12,122.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786 : 7,617 = 7,617 : x
  2. Step 2: Convert to fraction form
    4,786/7,617 = 7,617/x
  3. Step 3: Cross multiply
    4,786x = 7,617 × 7,617
  4. Step 4: Simplify right side
    4,786x = 58,018,689
  5. Step 5: Solve for x
    x = 58,018,689/4,786
  6. Step 6: Final answer
    x = 12,122.58

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.