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Finding the Third Proportional to 4,080 and 5,634

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Solution

The third proportional to 4,080 and 5,634 is: 7,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,080 : 5,634 = 5,634 : x
  2. Step 2: Convert to fraction form
    4,080/5,634 = 5,634/x
  3. Step 3: Cross multiply
    4,080x = 5,634 × 5,634
  4. Step 4: Simplify right side
    4,080x = 31,741,956
  5. Step 5: Solve for x
    x = 31,741,956/4,080
  6. Step 6: Final answer
    x = 7,779.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.