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Finding the Fourth Proportional to 84,267.69, 126,428.87 and 25,103.87

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Solution

The fourth proportional to 84,267.69, 126,428.87 and 25,103.87 is: 37,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,267.69 : 126,428.87 = 25,103.87 : x
  2. Step 2: Convert to fraction form
    84,267.69/126,428.87 = 25,103.87/x
  3. Step 3: Cross multiply
    84,267.69x = 126,428.87 × 25,103.87
  4. Step 4: Simplify right side
    84,267.69x = 3,173,854,295.56
  5. Step 5: Solve for x
    x = 3,173,854,295.56/84,267.69
  6. Step 6: Final answer
    x = 37,663.95

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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.