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Finding the Third Proportional to 1,210 and 1,786

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Solution

The third proportional to 1,210 and 1,786 is: 2,636.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210 : 1,786 = 1,786 : x
  2. Step 2: Convert to fraction form
    1,210/1,786 = 1,786/x
  3. Step 3: Cross multiply
    1,210x = 1,786 × 1,786
  4. Step 4: Simplify right side
    1,210x = 3,189,796
  5. Step 5: Solve for x
    x = 3,189,796/1,210
  6. Step 6: Final answer
    x = 2,636.20

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.