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Finding the Fourth Proportional to 86,407.32, 129,606.66 and 33,826.44

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Solution

The fourth proportional to 86,407.32, 129,606.66 and 33,826.44 is: 50,737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,407.32 : 129,606.66 = 33,826.44 : x
  2. Step 2: Convert to fraction form
    86,407.32/129,606.66 = 33,826.44/x
  3. Step 3: Cross multiply
    86,407.32x = 129,606.66 × 33,826.44
  4. Step 4: Simplify right side
    86,407.32x = 4,384,131,908.09
  5. Step 5: Solve for x
    x = 4,384,131,908.09/86,407.32
  6. Step 6: Final answer
    x = 50,737.97

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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.