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Finding the Third Proportional to 3,462.75 and 7,128

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Solution

The third proportional to 3,462.75 and 7,128 is: 14,672.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,462.75 : 7,128 = 7,128 : x
  2. Step 2: Convert to fraction form
    3,462.75/7,128 = 7,128/x
  3. Step 3: Cross multiply
    3,462.75x = 7,128 × 7,128
  4. Step 4: Simplify right side
    3,462.75x = 50,808,384
  5. Step 5: Solve for x
    x = 50,808,384/3,462.75
  6. Step 6: Final answer
    x = 14,672.84

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.