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Finding the Fourth Proportional to 73,620.05, 110,428.85 and 18,216.05

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Solution

The fourth proportional to 73,620.05, 110,428.85 and 18,216.05 is: 27,323.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,620.05 : 110,428.85 = 18,216.05 : x
  2. Step 2: Convert to fraction form
    73,620.05/110,428.85 = 18,216.05/x
  3. Step 3: Cross multiply
    73,620.05x = 110,428.85 × 18,216.05
  4. Step 4: Simplify right side
    73,620.05x = 2,011,576,946.44
  5. Step 5: Solve for x
    x = 2,011,576,946.44/73,620.05
  6. Step 6: Final answer
    x = 27,323.77

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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.