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Finding the Fourth Proportional to 86,338.79, 129,508.19 and 41,927.48

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Solution

The fourth proportional to 86,338.79, 129,508.19 and 41,927.48 is: 62,891.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,338.79 : 129,508.19 = 41,927.48 : x
  2. Step 2: Convert to fraction form
    86,338.79/129,508.19 = 41,927.48/x
  3. Step 3: Cross multiply
    86,338.79x = 129,508.19 × 41,927.48
  4. Step 4: Simplify right side
    86,338.79x = 5,429,952,046.06
  5. Step 5: Solve for x
    x = 5,429,952,046.06/86,338.79
  6. Step 6: Final answer
    x = 62,891.22

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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.