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Finding the Third Proportional to 1,864 and 4,786

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Solution

The third proportional to 1,864 and 4,786 is: 12,288.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864 : 4,786 = 4,786 : x
  2. Step 2: Convert to fraction form
    1,864/4,786 = 4,786/x
  3. Step 3: Cross multiply
    1,864x = 4,786 × 4,786
  4. Step 4: Simplify right side
    1,864x = 22,905,796
  5. Step 5: Solve for x
    x = 22,905,796/1,864
  6. Step 6: Final answer
    x = 12,288.52

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Why These Related Problems?

These problems maintain the same ratio (2.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.