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Finding the Fourth Proportional to 90,866.31, 136,357.79 and 44,093.67

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Solution

The fourth proportional to 90,866.31, 136,357.79 and 44,093.67 is: 66,168.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,866.31 : 136,357.79 = 44,093.67 : x
  2. Step 2: Convert to fraction form
    90,866.31/136,357.79 = 44,093.67/x
  3. Step 3: Cross multiply
    90,866.31x = 136,357.79 × 44,093.67
  4. Step 4: Simplify right side
    90,866.31x = 6,012,515,173.72
  5. Step 5: Solve for x
    x = 6,012,515,173.72/90,866.31
  6. Step 6: Final answer
    x = 66,168.81

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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.