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Finding the Fourth Proportional to 189,606.90, 261,658.88 and 104,723.96

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Solution

The fourth proportional to 189,606.90, 261,658.88 and 104,723.96 is: 144,519.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,606.90 : 261,658.88 = 104,723.96 : x
  2. Step 2: Convert to fraction form
    189,606.90/261,658.88 = 104,723.96/x
  3. Step 3: Cross multiply
    189,606.90x = 261,658.88 × 104,723.96
  4. Step 4: Simplify right side
    189,606.90x = 27,401,954,082.76
  5. Step 5: Solve for x
    x = 27,401,954,082.76/189,606.90
  6. Step 6: Final answer
    x = 144,519.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.