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Finding the Fourth Proportional to 114,120.36, 171,063.90 and 39,218.04

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Solution

The fourth proportional to 114,120.36, 171,063.90 and 39,218.04 is: 58,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,120.36 : 171,063.90 = 39,218.04 : x
  2. Step 2: Convert to fraction form
    114,120.36/171,063.90 = 39,218.04/x
  3. Step 3: Cross multiply
    114,120.36x = 171,063.90 × 39,218.04
  4. Step 4: Simplify right side
    114,120.36x = 6,708,790,872.76
  5. Step 5: Solve for x
    x = 6,708,790,872.76/114,120.36
  6. Step 6: Final answer
    x = 58,786.98

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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.