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Finding the Third Proportional to 7,168 and 11,488

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Solution

The third proportional to 7,168 and 11,488 is: 18,411.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168 : 11,488 = 11,488 : x
  2. Step 2: Convert to fraction form
    7,168/11,488 = 11,488/x
  3. Step 3: Cross multiply
    7,168x = 11,488 × 11,488
  4. Step 4: Simplify right side
    7,168x = 131,974,144
  5. Step 5: Solve for x
    x = 131,974,144/7,168
  6. Step 6: Final answer
    x = 18,411.57

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.