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Finding the Third Proportional to 4,709 and 7,271

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Solution

The third proportional to 4,709 and 7,271 is: 11,226.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,709 : 7,271 = 7,271 : x
  2. Step 2: Convert to fraction form
    4,709/7,271 = 7,271/x
  3. Step 3: Cross multiply
    4,709x = 7,271 × 7,271
  4. Step 4: Simplify right side
    4,709x = 52,867,441
  5. Step 5: Solve for x
    x = 52,867,441/4,709
  6. Step 6: Final answer
    x = 11,226.89

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.