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Finding the Fourth Proportional to 86,407.82, 129,607.40 and 33,826.94

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Solution

The fourth proportional to 86,407.82, 129,607.40 and 33,826.94 is: 50,738.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,407.82 : 129,607.40 = 33,826.94 : x
  2. Step 2: Convert to fraction form
    86,407.82/129,607.40 = 33,826.94/x
  3. Step 3: Cross multiply
    86,407.82x = 129,607.40 × 33,826.94
  4. Step 4: Simplify right side
    86,407.82x = 4,384,221,743.36
  5. Step 5: Solve for x
    x = 4,384,221,743.36/86,407.82
  6. Step 6: Final answer
    x = 50,738.71

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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.