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Finding the Fourth Proportional to 72,605.42, 108,904.21 and 22,679.79

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Solution

The fourth proportional to 72,605.42, 108,904.21 and 22,679.79 is: 34,018.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.42 : 108,904.21 = 22,679.79 : x
  2. Step 2: Convert to fraction form
    72,605.42/108,904.21 = 22,679.79/x
  3. Step 3: Cross multiply
    72,605.42x = 108,904.21 × 22,679.79
  4. Step 4: Simplify right side
    72,605.42x = 2,469,924,612.92
  5. Step 5: Solve for x
    x = 2,469,924,612.92/72,605.42
  6. Step 6: Final answer
    x = 34,018.46

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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.