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Finding the Third Proportional to 4,912.13 and 7,511.63

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Solution

The third proportional to 4,912.13 and 7,511.63 is: 11,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.13 : 7,511.63 = 7,511.63 : x
  2. Step 2: Convert to fraction form
    4,912.13/7,511.63 = 7,511.63/x
  3. Step 3: Cross multiply
    4,912.13x = 7,511.63 × 7,511.63
  4. Step 4: Simplify right side
    4,912.13x = 56,424,510.14
  5. Step 5: Solve for x
    x = 56,424,510.14/4,912.13
  6. Step 6: Final answer
    x = 11,486.78

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.