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Finding the Fourth Proportional to 394,930.80, 591,715.80 and 184,136.40

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Solution

The fourth proportional to 394,930.80, 591,715.80 and 184,136.40 is: 275,887.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,930.80 : 591,715.80 = 184,136.40 : x
  2. Step 2: Convert to fraction form
    394,930.80/591,715.80 = 184,136.40/x
  3. Step 3: Cross multiply
    394,930.80x = 591,715.80 × 184,136.40
  4. Step 4: Simplify right side
    394,930.80x = 108,956,417,235.12
  5. Step 5: Solve for x
    x = 108,956,417,235.12/394,930.80
  6. Step 6: Final answer
    x = 275,887.36

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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.