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Finding the Fourth Proportional to 503,412.78, 694,553.19 and 285,585.54

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Solution

The fourth proportional to 503,412.78, 694,553.19 and 285,585.54 is: 394,019.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,412.78 : 694,553.19 = 285,585.54 : x
  2. Step 2: Convert to fraction form
    503,412.78/694,553.19 = 285,585.54/x
  3. Step 3: Cross multiply
    503,412.78x = 694,553.19 × 285,585.54
  4. Step 4: Simplify right side
    503,412.78x = 198,354,347,824.87
  5. Step 5: Solve for x
    x = 198,354,347,824.87/503,412.78
  6. Step 6: Final answer
    x = 394,019.29

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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.