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Finding the Fourth Proportional to 86,561.46, 129,853.13 and 27,375.77

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Solution

The fourth proportional to 86,561.46, 129,853.13 and 27,375.77 is: 41,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,561.46 : 129,853.13 = 27,375.77 : x
  2. Step 2: Convert to fraction form
    86,561.46/129,853.13 = 27,375.77/x
  3. Step 3: Cross multiply
    86,561.46x = 129,853.13 × 27,375.77
  4. Step 4: Simplify right side
    86,561.46x = 3,554,829,608.41
  5. Step 5: Solve for x
    x = 3,554,829,608.41/86,561.46
  6. Step 6: Final answer
    x = 41,067.12

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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.