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Finding the Third Proportional to 2,190 and 4,703

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Solution

The third proportional to 2,190 and 4,703 is: 10,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190 : 4,703 = 4,703 : x
  2. Step 2: Convert to fraction form
    2,190/4,703 = 4,703/x
  3. Step 3: Cross multiply
    2,190x = 4,703 × 4,703
  4. Step 4: Simplify right side
    2,190x = 22,118,209
  5. Step 5: Solve for x
    x = 22,118,209/2,190
  6. Step 6: Final answer
    x = 10,099.64

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.