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Finding the Fourth Proportional to 72,891.81, 109,090.83 and 44,829.66

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Solution

The fourth proportional to 72,891.81, 109,090.83 and 44,829.66 is: 67,092.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,891.81 : 109,090.83 = 44,829.66 : x
  2. Step 2: Convert to fraction form
    72,891.81/109,090.83 = 44,829.66/x
  3. Step 3: Cross multiply
    72,891.81x = 109,090.83 × 44,829.66
  4. Step 4: Simplify right side
    72,891.81x = 4,890,504,818.02
  5. Step 5: Solve for x
    x = 4,890,504,818.02/72,891.81
  6. Step 6: Final answer
    x = 67,092.65

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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.