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Finding the Fourth Proportional to 8,531.61, 12,791.92 and 3,599.93

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Solution

The fourth proportional to 8,531.61, 12,791.92 and 3,599.93 is: 5,397.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.61 : 12,791.92 = 3,599.93 : x
  2. Step 2: Convert to fraction form
    8,531.61/12,791.92 = 3,599.93/x
  3. Step 3: Cross multiply
    8,531.61x = 12,791.92 × 3,599.93
  4. Step 4: Simplify right side
    8,531.61x = 46,050,016.57
  5. Step 5: Solve for x
    x = 46,050,016.57/8,531.61
  6. Step 6: Final answer
    x = 5,397.58

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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.