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Finding the Fourth Proportional to 73,807.72, 110,691.08 and 20,487.44

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Solution

The fourth proportional to 73,807.72, 110,691.08 and 20,487.44 is: 30,725.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,807.72 : 110,691.08 = 20,487.44 : x
  2. Step 2: Convert to fraction form
    73,807.72/110,691.08 = 20,487.44/x
  3. Step 3: Cross multiply
    73,807.72x = 110,691.08 × 20,487.44
  4. Step 4: Simplify right side
    73,807.72x = 2,267,776,860.04
  5. Step 5: Solve for x
    x = 2,267,776,860.04/73,807.72
  6. Step 6: Final answer
    x = 30,725.47

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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.