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Finding the Fourth Proportional to 90,818.58, 136,232.99 and 27,640.77

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Solution

The fourth proportional to 90,818.58, 136,232.99 and 27,640.77 is: 41,462.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,818.58 : 136,232.99 = 27,640.77 : x
  2. Step 2: Convert to fraction form
    90,818.58/136,232.99 = 27,640.77/x
  3. Step 3: Cross multiply
    90,818.58x = 136,232.99 × 27,640.77
  4. Step 4: Simplify right side
    90,818.58x = 3,765,584,743.00
  5. Step 5: Solve for x
    x = 3,765,584,743.00/90,818.58
  6. Step 6: Final answer
    x = 41,462.71

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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.