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Finding the Fourth Proportional to 118,238.79, 177,245.42 and 39,297.66

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Solution

The fourth proportional to 118,238.79, 177,245.42 and 39,297.66 is: 58,909.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,238.79 : 177,245.42 = 39,297.66 : x
  2. Step 2: Convert to fraction form
    118,238.79/177,245.42 = 39,297.66/x
  3. Step 3: Cross multiply
    118,238.79x = 177,245.42 × 39,297.66
  4. Step 4: Simplify right side
    118,238.79x = 6,965,329,390.56
  5. Step 5: Solve for x
    x = 6,965,329,390.56/118,238.79
  6. Step 6: Final answer
    x = 58,909.01

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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.