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Finding the Fourth Proportional to 394,865.60, 591,909.60 and 195,216.80

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Solution

The fourth proportional to 394,865.60, 591,909.60 and 195,216.80 is: 292,632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,865.60 : 591,909.60 = 195,216.80 : x
  2. Step 2: Convert to fraction form
    394,865.60/591,909.60 = 195,216.80/x
  3. Step 3: Cross multiply
    394,865.60x = 591,909.60 × 195,216.80
  4. Step 4: Simplify right side
    394,865.60x = 115,550,698,001.28
  5. Step 5: Solve for x
    x = 115,550,698,001.28/394,865.60
  6. Step 6: Final answer
    x = 292,632.98

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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.