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Finding the Third Proportional to 5,289 and 9,330

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Solution

The third proportional to 5,289 and 9,330 is: 16,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289 : 9,330 = 9,330 : x
  2. Step 2: Convert to fraction form
    5,289/9,330 = 9,330/x
  3. Step 3: Cross multiply
    5,289x = 9,330 × 9,330
  4. Step 4: Simplify right side
    5,289x = 87,048,900
  5. Step 5: Solve for x
    x = 87,048,900/5,289
  6. Step 6: Final answer
    x = 16,458.48

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.