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Finding the Fourth Proportional to 394,363.20, 591,544.80 and 184,411.20

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Solution

The fourth proportional to 394,363.20, 591,544.80 and 184,411.20 is: 276,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,363.20 : 591,544.80 = 184,411.20 : x
  2. Step 2: Convert to fraction form
    394,363.20/591,544.80 = 184,411.20/x
  3. Step 3: Cross multiply
    394,363.20x = 591,544.80 × 184,411.20
  4. Step 4: Simplify right side
    394,363.20x = 109,087,486,421.76
  5. Step 5: Solve for x
    x = 109,087,486,421.76/394,363.20
  6. Step 6: Final answer
    x = 276,616.80

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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.