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Finding the Third Proportional to 5,388 and 8,326

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Solution

The third proportional to 5,388 and 8,326 is: 12,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388 : 8,326 = 8,326 : x
  2. Step 2: Convert to fraction form
    5,388/8,326 = 8,326/x
  3. Step 3: Cross multiply
    5,388x = 8,326 × 8,326
  4. Step 4: Simplify right side
    5,388x = 69,322,276
  5. Step 5: Solve for x
    x = 69,322,276/5,388
  6. Step 6: Final answer
    x = 12,866.05

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.