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Finding the Fourth Proportional to 263,366.88, 395,063.10 and 85,873.62

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Solution

The fourth proportional to 263,366.88, 395,063.10 and 85,873.62 is: 128,814.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,366.88 : 395,063.10 = 85,873.62 : x
  2. Step 2: Convert to fraction form
    263,366.88/395,063.10 = 85,873.62/x
  3. Step 3: Cross multiply
    263,366.88x = 395,063.10 × 85,873.62
  4. Step 4: Simplify right side
    263,366.88x = 33,925,498,525.42
  5. Step 5: Solve for x
    x = 33,925,498,525.42/263,366.88
  6. Step 6: Final answer
    x = 128,814.60

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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.