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Finding the Fourth Proportional to 71,773.73, 98,945.10 and 50,486.93

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Solution

The fourth proportional to 71,773.73, 98,945.10 and 50,486.93 is: 69,599.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,773.73 : 98,945.10 = 50,486.93 : x
  2. Step 2: Convert to fraction form
    71,773.73/98,945.10 = 50,486.93/x
  3. Step 3: Cross multiply
    71,773.73x = 98,945.10 × 50,486.93
  4. Step 4: Simplify right side
    71,773.73x = 4,995,434,337.54
  5. Step 5: Solve for x
    x = 4,995,434,337.54/71,773.73
  6. Step 6: Final answer
    x = 69,599.76

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Why These Related Problems?

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