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Finding the Fourth Proportional to 92,786.91, 139,254.17 and 33,639.45

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Solution

The fourth proportional to 92,786.91, 139,254.17 and 33,639.45 is: 50,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,786.91 : 139,254.17 = 33,639.45 : x
  2. Step 2: Convert to fraction form
    92,786.91/139,254.17 = 33,639.45/x
  3. Step 3: Cross multiply
    92,786.91x = 139,254.17 × 33,639.45
  4. Step 4: Simplify right side
    92,786.91x = 4,684,433,520.81
  5. Step 5: Solve for x
    x = 4,684,433,520.81/92,786.91
  6. Step 6: Final answer
    x = 50,485.93

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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.