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Finding the Fourth Proportional to 100,118.25, 150,060.74 and 55,723.77

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Solution

The fourth proportional to 100,118.25, 150,060.74 and 55,723.77 is: 83,520.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,118.25 : 150,060.74 = 55,723.77 : x
  2. Step 2: Convert to fraction form
    100,118.25/150,060.74 = 55,723.77/x
  3. Step 3: Cross multiply
    100,118.25x = 150,060.74 × 55,723.77
  4. Step 4: Simplify right side
    100,118.25x = 8,361,949,883.17
  5. Step 5: Solve for x
    x = 8,361,949,883.17/100,118.25
  6. Step 6: Final answer
    x = 83,520.74

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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.