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Finding the Fourth Proportional to 394,714.80, 592,072.20 and 235,047.60

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Solution

The fourth proportional to 394,714.80, 592,072.20 and 235,047.60 is: 352,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,714.80 : 592,072.20 = 235,047.60 : x
  2. Step 2: Convert to fraction form
    394,714.80/592,072.20 = 235,047.60/x
  3. Step 3: Cross multiply
    394,714.80x = 592,072.20 × 235,047.60
  4. Step 4: Simplify right side
    394,714.80x = 139,165,149,636.72
  5. Step 5: Solve for x
    x = 139,165,149,636.72/394,714.80
  6. Step 6: Final answer
    x = 352,571.40

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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.