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Finding the Third Proportional to 7,374 and 15,921.75

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Solution

The third proportional to 7,374 and 15,921.75 is: 34,377.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,374 : 15,921.75 = 15,921.75 : x
  2. Step 2: Convert to fraction form
    7,374/15,921.75 = 15,921.75/x
  3. Step 3: Cross multiply
    7,374x = 15,921.75 × 15,921.75
  4. Step 4: Simplify right side
    7,374x = 253,502,123.06
  5. Step 5: Solve for x
    x = 253,502,123.06/7,374
  6. Step 6: Final answer
    x = 34,377.83

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.