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Finding the Fourth Proportional to 526,728.62, 726,883.17 and 285,015.48

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Solution

The fourth proportional to 526,728.62, 726,883.17 and 285,015.48 is: 393,320.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,728.62 : 726,883.17 = 285,015.48 : x
  2. Step 2: Convert to fraction form
    526,728.62/726,883.17 = 285,015.48/x
  3. Step 3: Cross multiply
    526,728.62x = 726,883.17 × 285,015.48
  4. Step 4: Simplify right side
    526,728.62x = 207,172,951,806.85
  5. Step 5: Solve for x
    x = 207,172,951,806.85/526,728.62
  6. Step 6: Final answer
    x = 393,320.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.