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Finding the Fourth Proportional to 185,761.98, 256,351.38 and 100,879.02

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Solution

The fourth proportional to 185,761.98, 256,351.38 and 100,879.02 is: 139,212.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,761.98 : 256,351.38 = 100,879.02 : x
  2. Step 2: Convert to fraction form
    185,761.98/256,351.38 = 100,879.02/x
  3. Step 3: Cross multiply
    185,761.98x = 256,351.38 × 100,879.02
  4. Step 4: Simplify right side
    185,761.98x = 25,860,475,990.05
  5. Step 5: Solve for x
    x = 25,860,475,990.05/185,761.98
  6. Step 6: Final answer
    x = 139,212.96

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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.