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Finding the Third Proportional to 7,938 and 16,930.41

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Solution

The third proportional to 7,938 and 16,930.41 is: 36,109.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938 : 16,930.41 = 16,930.41 : x
  2. Step 2: Convert to fraction form
    7,938/16,930.41 = 16,930.41/x
  3. Step 3: Cross multiply
    7,938x = 16,930.41 × 16,930.41
  4. Step 4: Simplify right side
    7,938x = 286,638,655.79
  5. Step 5: Solve for x
    x = 286,638,655.79/7,938
  6. Step 6: Final answer
    x = 36,109.68

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.