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Finding the Fourth Proportional to 52,080.45, 78,121.89 and 18,803.22

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Solution

The fourth proportional to 52,080.45, 78,121.89 and 18,803.22 is: 28,205.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,080.45 : 78,121.89 = 18,803.22 : x
  2. Step 2: Convert to fraction form
    52,080.45/78,121.89 = 18,803.22/x
  3. Step 3: Cross multiply
    52,080.45x = 78,121.89 × 18,803.22
  4. Step 4: Simplify right side
    52,080.45x = 1,468,943,084.49
  5. Step 5: Solve for x
    x = 1,468,943,084.49/52,080.45
  6. Step 6: Final answer
    x = 28,205.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.