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Finding the Fourth Proportional to 394,406.60, 591,264.30 and 236,467.40

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Solution

The fourth proportional to 394,406.60, 591,264.30 and 236,467.40 is: 354,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,406.60 : 591,264.30 = 236,467.40 : x
  2. Step 2: Convert to fraction form
    394,406.60/591,264.30 = 236,467.40/x
  3. Step 3: Cross multiply
    394,406.60x = 591,264.30 × 236,467.40
  4. Step 4: Simplify right side
    394,406.60x = 139,814,731,733.82
  5. Step 5: Solve for x
    x = 139,814,731,733.82/394,406.60
  6. Step 6: Final answer
    x = 354,493.89

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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.