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Finding the Fourth Proportional to 129,115.67, 193,684.67 and 35,621.42

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Solution

The fourth proportional to 129,115.67, 193,684.67 and 35,621.42 is: 53,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,115.67 : 193,684.67 = 35,621.42 : x
  2. Step 2: Convert to fraction form
    129,115.67/193,684.67 = 35,621.42/x
  3. Step 3: Cross multiply
    129,115.67x = 193,684.67 × 35,621.42
  4. Step 4: Simplify right side
    129,115.67x = 6,899,322,977.63
  5. Step 5: Solve for x
    x = 6,899,322,977.63/129,115.67
  6. Step 6: Final answer
    x = 53,435.21

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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.