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Finding the Fourth Proportional to 60,226.89, 90,217.64 and 28,540.91

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Solution

The fourth proportional to 60,226.89, 90,217.64 and 28,540.91 is: 42,753.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,226.89 : 90,217.64 = 28,540.91 : x
  2. Step 2: Convert to fraction form
    60,226.89/90,217.64 = 28,540.91/x
  3. Step 3: Cross multiply
    60,226.89x = 90,217.64 × 28,540.91
  4. Step 4: Simplify right side
    60,226.89x = 2,574,892,949.86
  5. Step 5: Solve for x
    x = 2,574,892,949.86/60,226.89
  6. Step 6: Final answer
    x = 42,753.21

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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.