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Finding the Fourth Proportional to 263,808.66, 395,709.30 and 64,128.42

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Solution

The fourth proportional to 263,808.66, 395,709.30 and 64,128.42 is: 96,191.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,808.66 : 395,709.30 = 64,128.42 : x
  2. Step 2: Convert to fraction form
    263,808.66/395,709.30 = 64,128.42/x
  3. Step 3: Cross multiply
    263,808.66x = 395,709.30 × 64,128.42
  4. Step 4: Simplify right side
    263,808.66x = 25,376,212,188.31
  5. Step 5: Solve for x
    x = 25,376,212,188.31/263,808.66
  6. Step 6: Final answer
    x = 96,191.73

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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.