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Finding the Third Proportional to 4,142 and 5,673

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Solution

The third proportional to 4,142 and 5,673 is: 7,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142 : 5,673 = 5,673 : x
  2. Step 2: Convert to fraction form
    4,142/5,673 = 5,673/x
  3. Step 3: Cross multiply
    4,142x = 5,673 × 5,673
  4. Step 4: Simplify right side
    4,142x = 32,182,929
  5. Step 5: Solve for x
    x = 32,182,929/4,142
  6. Step 6: Final answer
    x = 7,769.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.