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Finding the Third Proportional to 7,208 and 11,332

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Solution

The third proportional to 7,208 and 11,332 is: 17,815.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208 : 11,332 = 11,332 : x
  2. Step 2: Convert to fraction form
    7,208/11,332 = 11,332/x
  3. Step 3: Cross multiply
    7,208x = 11,332 × 11,332
  4. Step 4: Simplify right side
    7,208x = 128,414,224
  5. Step 5: Solve for x
    x = 128,414,224/7,208
  6. Step 6: Final answer
    x = 17,815.51

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.