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Finding the Third Proportional to 4,487 and 7,098

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Solution

The third proportional to 4,487 and 7,098 is: 11,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,487 : 7,098 = 7,098 : x
  2. Step 2: Convert to fraction form
    4,487/7,098 = 7,098/x
  3. Step 3: Cross multiply
    4,487x = 7,098 × 7,098
  4. Step 4: Simplify right side
    4,487x = 50,381,604
  5. Step 5: Solve for x
    x = 50,381,604/4,487
  6. Step 6: Final answer
    x = 11,228.35

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.