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Finding the Fourth Proportional to 86,336.82, 129,471.18 and 41,950.44

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Solution

The fourth proportional to 86,336.82, 129,471.18 and 41,950.44 is: 62,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,336.82 : 129,471.18 = 41,950.44 : x
  2. Step 2: Convert to fraction form
    86,336.82/129,471.18 = 41,950.44/x
  3. Step 3: Cross multiply
    86,336.82x = 129,471.18 × 41,950.44
  4. Step 4: Simplify right side
    86,336.82x = 5,431,372,968.32
  5. Step 5: Solve for x
    x = 5,431,372,968.32/86,336.82
  6. Step 6: Final answer
    x = 62,909.12

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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.