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Finding the Fourth Proportional to 271,640.40, 407,606.40 and 113,884.80

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Solution

The fourth proportional to 271,640.40, 407,606.40 and 113,884.80 is: 170,888.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,640.40 : 407,606.40 = 113,884.80 : x
  2. Step 2: Convert to fraction form
    271,640.40/407,606.40 = 113,884.80/x
  3. Step 3: Cross multiply
    271,640.40x = 407,606.40 × 113,884.80
  4. Step 4: Simplify right side
    271,640.40x = 46,420,173,342.72
  5. Step 5: Solve for x
    x = 46,420,173,342.72/271,640.40
  6. Step 6: Final answer
    x = 170,888.33

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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.