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Finding the Third Proportional to 7,940 and 19,226

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Solution

The third proportional to 7,940 and 19,226 is: 46,554.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940 : 19,226 = 19,226 : x
  2. Step 2: Convert to fraction form
    7,940/19,226 = 19,226/x
  3. Step 3: Cross multiply
    7,940x = 19,226 × 19,226
  4. Step 4: Simplify right side
    7,940x = 369,639,076
  5. Step 5: Solve for x
    x = 369,639,076/7,940
  6. Step 6: Final answer
    x = 46,554.04

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.