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Finding the Third Proportional to 4,187 and 6,290

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Solution

The third proportional to 4,187 and 6,290 is: 9,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187 : 6,290 = 6,290 : x
  2. Step 2: Convert to fraction form
    4,187/6,290 = 6,290/x
  3. Step 3: Cross multiply
    4,187x = 6,290 × 6,290
  4. Step 4: Simplify right side
    4,187x = 39,564,100
  5. Step 5: Solve for x
    x = 39,564,100/4,187
  6. Step 6: Final answer
    x = 9,449.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.