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Finding the Third Proportional to 3,491 and 7,370

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Solution

The third proportional to 3,491 and 7,370 is: 15,559.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491 : 7,370 = 7,370 : x
  2. Step 2: Convert to fraction form
    3,491/7,370 = 7,370/x
  3. Step 3: Cross multiply
    3,491x = 7,370 × 7,370
  4. Step 4: Simplify right side
    3,491x = 54,316,900
  5. Step 5: Solve for x
    x = 54,316,900/3,491
  6. Step 6: Final answer
    x = 15,559.12

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.