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Finding the Fourth Proportional to 92,686.91, 139,041.18 and 33,550.43

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Solution

The fourth proportional to 92,686.91, 139,041.18 and 33,550.43 is: 50,329.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,686.91 : 139,041.18 = 33,550.43 : x
  2. Step 2: Convert to fraction form
    92,686.91/139,041.18 = 33,550.43/x
  3. Step 3: Cross multiply
    92,686.91x = 139,041.18 × 33,550.43
  4. Step 4: Simplify right side
    92,686.91x = 4,664,891,208.96
  5. Step 5: Solve for x
    x = 4,664,891,208.96/92,686.91
  6. Step 6: Final answer
    x = 50,329.56

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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.