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Finding the Fourth Proportional to 75,139.66, 112,731.45 and 33,576.94

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Solution

The fourth proportional to 75,139.66, 112,731.45 and 33,576.94 is: 50,375.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,139.66 : 112,731.45 = 33,576.94 : x
  2. Step 2: Convert to fraction form
    75,139.66/112,731.45 = 33,576.94/x
  3. Step 3: Cross multiply
    75,139.66x = 112,731.45 × 33,576.94
  4. Step 4: Simplify right side
    75,139.66x = 3,785,177,132.76
  5. Step 5: Solve for x
    x = 3,785,177,132.76/75,139.66
  6. Step 6: Final answer
    x = 50,375.22

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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.