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Finding the Third Proportional to 4,642 and 7,005

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Solution

The third proportional to 4,642 and 7,005 is: 10,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,642 : 7,005 = 7,005 : x
  2. Step 2: Convert to fraction form
    4,642/7,005 = 7,005/x
  3. Step 3: Cross multiply
    4,642x = 7,005 × 7,005
  4. Step 4: Simplify right side
    4,642x = 49,070,025
  5. Step 5: Solve for x
    x = 49,070,025/4,642
  6. Step 6: Final answer
    x = 10,570.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.