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Finding the Fourth Proportional to 8,613.69, 11,891.42 and 5,795.88

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Solution

The fourth proportional to 8,613.69, 11,891.42 and 5,795.88 is: 8,001.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.69 : 11,891.42 = 5,795.88 : x
  2. Step 2: Convert to fraction form
    8,613.69/11,891.42 = 5,795.88/x
  3. Step 3: Cross multiply
    8,613.69x = 11,891.42 × 5,795.88
  4. Step 4: Simplify right side
    8,613.69x = 68,921,214.37
  5. Step 5: Solve for x
    x = 68,921,214.37/8,613.69
  6. Step 6: Final answer
    x = 8,001.36

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1.5x scale

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.