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Finding the Fourth Proportional to 92,874.42, 139,229.01 and 40,255.20

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Solution

The fourth proportional to 92,874.42, 139,229.01 and 40,255.20 is: 60,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,874.42 : 139,229.01 = 40,255.20 : x
  2. Step 2: Convert to fraction form
    92,874.42/139,229.01 = 40,255.20/x
  3. Step 3: Cross multiply
    92,874.42x = 139,229.01 × 40,255.20
  4. Step 4: Simplify right side
    92,874.42x = 5,604,691,643.35
  5. Step 5: Solve for x
    x = 5,604,691,643.35/92,874.42
  6. Step 6: Final answer
    x = 60,346.99

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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.