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Finding the Fourth Proportional to 10,718.73, 16,081.13 and 5,791.91

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Solution

The fourth proportional to 10,718.73, 16,081.13 and 5,791.91 is: 8,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,718.73 : 16,081.13 = 5,791.91 : x
  2. Step 2: Convert to fraction form
    10,718.73/16,081.13 = 5,791.91/x
  3. Step 3: Cross multiply
    10,718.73x = 16,081.13 × 5,791.91
  4. Step 4: Simplify right side
    10,718.73x = 93,140,391.73
  5. Step 5: Solve for x
    x = 93,140,391.73/10,718.73
  6. Step 6: Final answer
    x = 8,689.50

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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.