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Finding the Third Proportional to 929 and 1,986

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Solution

The third proportional to 929 and 1,986 is: 4,245.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    929 : 1,986 = 1,986 : x
  2. Step 2: Convert to fraction form
    929/1,986 = 1,986/x
  3. Step 3: Cross multiply
    929x = 1,986 × 1,986
  4. Step 4: Simplify right side
    929x = 3,944,196
  5. Step 5: Solve for x
    x = 3,944,196/929
  6. Step 6: Final answer
    x = 4,245.64

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.