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Finding the Fourth Proportional to 519,502.56, 778,626.80 and 252,863.52

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Solution

The fourth proportional to 519,502.56, 778,626.80 and 252,863.52 is: 378,990.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,502.56 : 778,626.80 = 252,863.52 : x
  2. Step 2: Convert to fraction form
    519,502.56/778,626.80 = 252,863.52/x
  3. Step 3: Cross multiply
    519,502.56x = 778,626.80 × 252,863.52
  4. Step 4: Simplify right side
    519,502.56x = 196,886,313,414.34
  5. Step 5: Solve for x
    x = 196,886,313,414.34/519,502.56
  6. Step 6: Final answer
    x = 378,990.07

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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.