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Finding the Third Proportional to 1,924 and 4,987

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Solution

The third proportional to 1,924 and 4,987 is: 12,926.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,924 : 4,987 = 4,987 : x
  2. Step 2: Convert to fraction form
    1,924/4,987 = 4,987/x
  3. Step 3: Cross multiply
    1,924x = 4,987 × 4,987
  4. Step 4: Simplify right side
    1,924x = 24,870,169
  5. Step 5: Solve for x
    x = 24,870,169/1,924
  6. Step 6: Final answer
    x = 12,926.28

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Why These Related Problems?

These problems maintain the same ratio (2.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.