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Finding the Fourth Proportional to 40,120.99, 55,366.24 and 22,215.94

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Solution

The fourth proportional to 40,120.99, 55,366.24 and 22,215.94 is: 30,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,120.99 : 55,366.24 = 22,215.94 : x
  2. Step 2: Convert to fraction form
    40,120.99/55,366.24 = 22,215.94/x
  3. Step 3: Cross multiply
    40,120.99x = 55,366.24 × 22,215.94
  4. Step 4: Simplify right side
    40,120.99x = 1,230,013,065.87
  5. Step 5: Solve for x
    x = 1,230,013,065.87/40,120.99
  6. Step 6: Final answer
    x = 30,657.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.