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Finding the Fourth Proportional to 114,486.42, 171,694.61 and 79,174.67

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Solution

The fourth proportional to 114,486.42, 171,694.61 and 79,174.67 is: 118,737.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,486.42 : 171,694.61 = 79,174.67 : x
  2. Step 2: Convert to fraction form
    114,486.42/171,694.61 = 79,174.67/x
  3. Step 3: Cross multiply
    114,486.42x = 171,694.61 × 79,174.67
  4. Step 4: Simplify right side
    114,486.42x = 13,593,864,087.53
  5. Step 5: Solve for x
    x = 13,593,864,087.53/114,486.42
  6. Step 6: Final answer
    x = 118,737.79

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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.