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Finding the Fourth Proportional to 519,677.20, 778,859.70 and 252,863.20

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Solution

The fourth proportional to 519,677.20, 778,859.70 and 252,863.20 is: 378,975.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,677.20 : 778,859.70 = 252,863.20 : x
  2. Step 2: Convert to fraction form
    519,677.20/778,859.70 = 252,863.20/x
  3. Step 3: Cross multiply
    519,677.20x = 778,859.70 × 252,863.20
  4. Step 4: Simplify right side
    519,677.20x = 196,944,956,093.04
  5. Step 5: Solve for x
    x = 196,944,956,093.04/519,677.20
  6. Step 6: Final answer
    x = 378,975.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.