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Finding the Fourth Proportional to 92,942, 139,334.62 and 40,311.84

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Solution

The fourth proportional to 92,942, 139,334.62 and 40,311.84 is: 60,433.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,942 : 139,334.62 = 40,311.84 : x
  2. Step 2: Convert to fraction form
    92,942/139,334.62 = 40,311.84/x
  3. Step 3: Cross multiply
    92,942x = 139,334.62 × 40,311.84
  4. Step 4: Simplify right side
    92,942x = 5,616,834,907.90
  5. Step 5: Solve for x
    x = 5,616,834,907.90/92,942
  6. Step 6: Final answer
    x = 60,433.76

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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.