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Finding the Third Proportional to 1,402 and 3,085

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Solution

The third proportional to 1,402 and 3,085 is: 6,788.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402 : 3,085 = 3,085 : x
  2. Step 2: Convert to fraction form
    1,402/3,085 = 3,085/x
  3. Step 3: Cross multiply
    1,402x = 3,085 × 3,085
  4. Step 4: Simplify right side
    1,402x = 9,517,225
  5. Step 5: Solve for x
    x = 9,517,225/1,402
  6. Step 6: Final answer
    x = 6,788.32

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.