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Finding the Third Proportional to 7,448 and 12,112

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Solution

The third proportional to 7,448 and 12,112 is: 19,696.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,448 : 12,112 = 12,112 : x
  2. Step 2: Convert to fraction form
    7,448/12,112 = 12,112/x
  3. Step 3: Cross multiply
    7,448x = 12,112 × 12,112
  4. Step 4: Simplify right side
    7,448x = 146,700,544
  5. Step 5: Solve for x
    x = 146,700,544/7,448
  6. Step 6: Final answer
    x = 19,696.64

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Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.