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Finding the Fourth Proportional to 443,760.60, 665,640.90 and 194,928.60

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Solution

The fourth proportional to 443,760.60, 665,640.90 and 194,928.60 is: 292,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,760.60 : 665,640.90 = 194,928.60 : x
  2. Step 2: Convert to fraction form
    443,760.60/665,640.90 = 194,928.60/x
  3. Step 3: Cross multiply
    443,760.60x = 665,640.90 × 194,928.60
  4. Step 4: Simplify right side
    443,760.60x = 129,752,448,739.74
  5. Step 5: Solve for x
    x = 129,752,448,739.74/443,760.60
  6. Step 6: Final answer
    x = 292,392.90

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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.