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Finding the Third Proportional to 1,554 and 2,087

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Solution

The third proportional to 1,554 and 2,087 is: 2,802.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554 : 2,087 = 2,087 : x
  2. Step 2: Convert to fraction form
    1,554/2,087 = 2,087/x
  3. Step 3: Cross multiply
    1,554x = 2,087 × 2,087
  4. Step 4: Simplify right side
    1,554x = 4,355,569
  5. Step 5: Solve for x
    x = 4,355,569/1,554
  6. Step 6: Final answer
    x = 2,802.81

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.