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Finding the Fourth Proportional to 518,992.92, 778,120.26 and 198,873.53

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Solution

The fourth proportional to 518,992.92, 778,120.26 and 198,873.53 is: 298,168.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,992.92 : 778,120.26 = 198,873.53 : x
  2. Step 2: Convert to fraction form
    518,992.92/778,120.26 = 198,873.53/x
  3. Step 3: Cross multiply
    518,992.92x = 778,120.26 × 198,873.53
  4. Step 4: Simplify right side
    518,992.92x = 154,747,522,870.72
  5. Step 5: Solve for x
    x = 154,747,522,870.72/518,992.92
  6. Step 6: Final answer
    x = 298,168.85

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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.