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Finding the Third Proportional to 253,194.75 and 391,923

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Solution

The third proportional to 253,194.75 and 391,923 is: 606,662.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,194.75 : 391,923 = 391,923 : x
  2. Step 2: Convert to fraction form
    253,194.75/391,923 = 391,923/x
  3. Step 3: Cross multiply
    253,194.75x = 391,923 × 391,923
  4. Step 4: Simplify right side
    253,194.75x = 153,603,637,929
  5. Step 5: Solve for x
    x = 153,603,637,929/253,194.75
  6. Step 6: Final answer
    x = 606,662.02

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.