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Finding the Third Proportional to 4,972 and 7,458

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Solution

The third proportional to 4,972 and 7,458 is: 11,187

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972 : 7,458 = 7,458 : x
  2. Step 2: Convert to fraction form
    4,972/7,458 = 7,458/x
  3. Step 3: Cross multiply
    4,972x = 7,458 × 7,458
  4. Step 4: Simplify right side
    4,972x = 55,621,764
  5. Step 5: Solve for x
    x = 55,621,764/4,972
  6. Step 6: Final answer
    x = 11,187

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.