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Finding the Third Proportional to 4,912 and 11,740

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Solution

The third proportional to 4,912 and 11,740 is: 28,059.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912 : 11,740 = 11,740 : x
  2. Step 2: Convert to fraction form
    4,912/11,740 = 11,740/x
  3. Step 3: Cross multiply
    4,912x = 11,740 × 11,740
  4. Step 4: Simplify right side
    4,912x = 137,827,600
  5. Step 5: Solve for x
    x = 137,827,600/4,912
  6. Step 6: Final answer
    x = 28,059.36

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.