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Finding the Third Proportional to 7,048 and 11,157

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Solution

The third proportional to 7,048 and 11,157 is: 17,661.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048 : 11,157 = 11,157 : x
  2. Step 2: Convert to fraction form
    7,048/11,157 = 11,157/x
  3. Step 3: Cross multiply
    7,048x = 11,157 × 11,157
  4. Step 4: Simplify right side
    7,048x = 124,478,649
  5. Step 5: Solve for x
    x = 124,478,649/7,048
  6. Step 6: Final answer
    x = 17,661.56

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.