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Finding the Fourth Proportional to 72,745.02, 109,006.11 and 48,964.62

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Solution

The fourth proportional to 72,745.02, 109,006.11 and 48,964.62 is: 73,371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,745.02 : 109,006.11 = 48,964.62 : x
  2. Step 2: Convert to fraction form
    72,745.02/109,006.11 = 48,964.62/x
  3. Step 3: Cross multiply
    72,745.02x = 109,006.11 × 48,964.62
  4. Step 4: Simplify right side
    72,745.02x = 5,337,442,753.83
  5. Step 5: Solve for x
    x = 5,337,442,753.83/72,745.02
  6. Step 6: Final answer
    x = 73,371.93

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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.