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Finding the Third Proportional to 3,342.50 and 4,912

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Solution

The third proportional to 3,342.50 and 4,912 is: 7,218.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,342.50 : 4,912 = 4,912 : x
  2. Step 2: Convert to fraction form
    3,342.50/4,912 = 4,912/x
  3. Step 3: Cross multiply
    3,342.50x = 4,912 × 4,912
  4. Step 4: Simplify right side
    3,342.50x = 24,127,744
  5. Step 5: Solve for x
    x = 24,127,744/3,342.50
  6. Step 6: Final answer
    x = 7,218.47

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.