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Finding the Fourth Proportional to 67,704.15, 93,402.78 and 40,831.38

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Solution

The fourth proportional to 67,704.15, 93,402.78 and 40,831.38 is: 56,329.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,704.15 : 93,402.78 = 40,831.38 : x
  2. Step 2: Convert to fraction form
    67,704.15/93,402.78 = 40,831.38/x
  3. Step 3: Cross multiply
    67,704.15x = 93,402.78 × 40,831.38
  4. Step 4: Simplify right side
    67,704.15x = 3,813,764,403.24
  5. Step 5: Solve for x
    x = 3,813,764,403.24/67,704.15
  6. Step 6: Final answer
    x = 56,329.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.