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Finding the Third Proportional to 1,617.47 and 3,455.16

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Solution

The third proportional to 1,617.47 and 3,455.16 is: 7,380.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.47 : 3,455.16 = 3,455.16 : x
  2. Step 2: Convert to fraction form
    1,617.47/3,455.16 = 3,455.16/x
  3. Step 3: Cross multiply
    1,617.47x = 3,455.16 × 3,455.16
  4. Step 4: Simplify right side
    1,617.47x = 11,938,104.71
  5. Step 5: Solve for x
    x = 11,938,104.71/1,617.47
  6. Step 6: Final answer
    x = 7,380.73

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.