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Finding the Fourth Proportional to 511,770.56, 768,321.05 and 393,524.93

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Solution

The fourth proportional to 511,770.56, 768,321.05 and 393,524.93 is: 590,798.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,770.56 : 768,321.05 = 393,524.93 : x
  2. Step 2: Convert to fraction form
    511,770.56/768,321.05 = 393,524.93/x
  3. Step 3: Cross multiply
    511,770.56x = 768,321.05 × 393,524.93
  4. Step 4: Simplify right side
    511,770.56x = 302,353,487,371.95
  5. Step 5: Solve for x
    x = 302,353,487,371.95/511,770.56
  6. Step 6: Final answer
    x = 590,798.91

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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.