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Finding the Fourth Proportional to 114,791.10, 158,403.48 and 71,789.94

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Solution

The fourth proportional to 114,791.10, 158,403.48 and 71,789.94 is: 99,064.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,791.10 : 158,403.48 = 71,789.94 : x
  2. Step 2: Convert to fraction form
    114,791.10/158,403.48 = 71,789.94/x
  3. Step 3: Cross multiply
    114,791.10x = 158,403.48 × 71,789.94
  4. Step 4: Simplify right side
    114,791.10x = 11,371,776,324.99
  5. Step 5: Solve for x
    x = 11,371,776,324.99/114,791.10
  6. Step 6: Final answer
    x = 99,064.97

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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.