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Finding the Fourth Proportional to 171,788.56, 257,682.84 and 100,819.19

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Solution

The fourth proportional to 171,788.56, 257,682.84 and 100,819.19 is: 151,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,788.56 : 257,682.84 = 100,819.19 : x
  2. Step 2: Convert to fraction form
    171,788.56/257,682.84 = 100,819.19/x
  3. Step 3: Cross multiply
    171,788.56x = 257,682.84 × 100,819.19
  4. Step 4: Simplify right side
    171,788.56x = 25,979,375,471.83
  5. Step 5: Solve for x
    x = 25,979,375,471.83/171,788.56
  6. Step 6: Final answer
    x = 151,228.79

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1.5x scale

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.