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Finding the Fourth Proportional to 185,761.76, 256,348.98 and 100,879.44

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Solution

The fourth proportional to 185,761.76, 256,348.98 and 100,879.44 is: 139,212.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,761.76 : 256,348.98 = 100,879.44 : x
  2. Step 2: Convert to fraction form
    185,761.76/256,348.98 = 100,879.44/x
  3. Step 3: Cross multiply
    185,761.76x = 256,348.98 × 100,879.44
  4. Step 4: Simplify right side
    185,761.76x = 25,860,341,546.97
  5. Step 5: Solve for x
    x = 25,860,341,546.97/185,761.76
  6. Step 6: Final answer
    x = 139,212.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.