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Finding the Fourth Proportional to 73,362.48, 110,043.72 and 20,772.42

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Solution

The fourth proportional to 73,362.48, 110,043.72 and 20,772.42 is: 31,158.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,362.48 : 110,043.72 = 20,772.42 : x
  2. Step 2: Convert to fraction form
    73,362.48/110,043.72 = 20,772.42/x
  3. Step 3: Cross multiply
    73,362.48x = 110,043.72 × 20,772.42
  4. Step 4: Simplify right side
    73,362.48x = 2,285,874,370.20
  5. Step 5: Solve for x
    x = 2,285,874,370.20/73,362.48
  6. Step 6: Final answer
    x = 31,158.63

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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.