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Finding the Fourth Proportional to 81,603.96, 122,405.38 and 44,400.56

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Solution

The fourth proportional to 81,603.96, 122,405.38 and 44,400.56 is: 66,600.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,603.96 : 122,405.38 = 44,400.56 : x
  2. Step 2: Convert to fraction form
    81,603.96/122,405.38 = 44,400.56/x
  3. Step 3: Cross multiply
    81,603.96x = 122,405.38 × 44,400.56
  4. Step 4: Simplify right side
    81,603.96x = 5,434,866,695.98
  5. Step 5: Solve for x
    x = 5,434,866,695.98/81,603.96
  6. Step 6: Final answer
    x = 66,600.53

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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.