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Finding the Fourth Proportional to 188,910.42, 281,892.14 and 172,143.42

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Solution

The fourth proportional to 188,910.42, 281,892.14 and 172,143.42 is: 256,872.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,910.42 : 281,892.14 = 172,143.42 : x
  2. Step 2: Convert to fraction form
    188,910.42/281,892.14 = 172,143.42/x
  3. Step 3: Cross multiply
    188,910.42x = 281,892.14 × 172,143.42
  4. Step 4: Simplify right side
    188,910.42x = 48,525,876,190.00
  5. Step 5: Solve for x
    x = 48,525,876,190.00/188,910.42
  6. Step 6: Final answer
    x = 256,872.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.