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Finding the Fourth Proportional to 115,810.48, 173,745.67 and 67,819.61

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Solution

The fourth proportional to 115,810.48, 173,745.67 and 67,819.61 is: 101,746.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,810.48 : 173,745.67 = 67,819.61 : x
  2. Step 2: Convert to fraction form
    115,810.48/173,745.67 = 67,819.61/x
  3. Step 3: Cross multiply
    115,810.48x = 173,745.67 × 67,819.61
  4. Step 4: Simplify right side
    115,810.48x = 11,783,363,578.59
  5. Step 5: Solve for x
    x = 11,783,363,578.59/115,810.48
  6. Step 6: Final answer
    x = 101,746.95

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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.