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Finding the Fourth Proportional to 72,462.80, 108,694.20 and 44,814.80

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Solution

The fourth proportional to 72,462.80, 108,694.20 and 44,814.80 is: 67,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,462.80 : 108,694.20 = 44,814.80 : x
  2. Step 2: Convert to fraction form
    72,462.80/108,694.20 = 44,814.80/x
  3. Step 3: Cross multiply
    72,462.80x = 108,694.20 × 44,814.80
  4. Step 4: Simplify right side
    72,462.80x = 4,871,108,834.16
  5. Step 5: Solve for x
    x = 4,871,108,834.16/72,462.80
  6. Step 6: Final answer
    x = 67,222.20

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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.