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Finding the Fourth Proportional to 281,091.88, 387,906.30 and 153,767.56

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Solution

The fourth proportional to 281,091.88, 387,906.30 and 153,767.56 is: 212,198.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,091.88 : 387,906.30 = 153,767.56 : x
  2. Step 2: Convert to fraction form
    281,091.88/387,906.30 = 153,767.56/x
  3. Step 3: Cross multiply
    281,091.88x = 387,906.30 × 153,767.56
  4. Step 4: Simplify right side
    281,091.88x = 59,647,405,259.63
  5. Step 5: Solve for x
    x = 59,647,405,259.63/281,091.88
  6. Step 6: Final answer
    x = 212,198.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.