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Finding the Third Proportional to 5,642 and 7,034

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Solution

The third proportional to 5,642 and 7,034 is: 8,769.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,642 : 7,034 = 7,034 : x
  2. Step 2: Convert to fraction form
    5,642/7,034 = 7,034/x
  3. Step 3: Cross multiply
    5,642x = 7,034 × 7,034
  4. Step 4: Simplify right side
    5,642x = 49,477,156
  5. Step 5: Solve for x
    x = 49,477,156/5,642
  6. Step 6: Final answer
    x = 8,769.44

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Why These Related Problems?

These problems maintain the same ratio (1.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.