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Finding the Third Proportional to 7,922.50 and 11,077

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Solution

The third proportional to 7,922.50 and 11,077 is: 15,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.50 : 11,077 = 11,077 : x
  2. Step 2: Convert to fraction form
    7,922.50/11,077 = 11,077/x
  3. Step 3: Cross multiply
    7,922.50x = 11,077 × 11,077
  4. Step 4: Simplify right side
    7,922.50x = 122,699,929
  5. Step 5: Solve for x
    x = 122,699,929/7,922.50
  6. Step 6: Final answer
    x = 15,487.53

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.