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Finding the Fourth Proportional to 60,517.80, 90,719.10 and 47,183.40

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Solution

The fourth proportional to 60,517.80, 90,719.10 and 47,183.40 is: 70,730.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,517.80 : 90,719.10 = 47,183.40 : x
  2. Step 2: Convert to fraction form
    60,517.80/90,719.10 = 47,183.40/x
  3. Step 3: Cross multiply
    60,517.80x = 90,719.10 × 47,183.40
  4. Step 4: Simplify right side
    60,517.80x = 4,280,435,582.94
  5. Step 5: Solve for x
    x = 4,280,435,582.94/60,517.80
  6. Step 6: Final answer
    x = 70,730.19

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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.