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Finding the Fourth Proportional to 188,911.42, 281,893.63 and 172,144.42

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Solution

The fourth proportional to 188,911.42, 281,893.63 and 172,144.42 is: 256,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,911.42 : 281,893.63 = 172,144.42 : x
  2. Step 2: Convert to fraction form
    188,911.42/281,893.63 = 172,144.42/x
  3. Step 3: Cross multiply
    188,911.42x = 281,893.63 × 172,144.42
  4. Step 4: Simplify right side
    188,911.42x = 48,526,415,438.04
  5. Step 5: Solve for x
    x = 48,526,415,438.04/188,911.42
  6. Step 6: Final answer
    x = 256,873.91

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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.