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Finding the Fourth Proportional to 394,486.60, 591,729.90 and 184,145.80

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Solution

The fourth proportional to 394,486.60, 591,729.90 and 184,145.80 is: 276,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,486.60 : 591,729.90 = 184,145.80 : x
  2. Step 2: Convert to fraction form
    394,486.60/591,729.90 = 184,145.80/x
  3. Step 3: Cross multiply
    394,486.60x = 591,729.90 × 184,145.80
  4. Step 4: Simplify right side
    394,486.60x = 108,964,575,819.42
  5. Step 5: Solve for x
    x = 108,964,575,819.42/394,486.60
  6. Step 6: Final answer
    x = 276,218.70

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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.