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Finding the Fourth Proportional to 383,909.22, 529,509.15 and 281,902.68

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Solution

The fourth proportional to 383,909.22, 529,509.15 and 281,902.68 is: 388,816.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,909.22 : 529,509.15 = 281,902.68 : x
  2. Step 2: Convert to fraction form
    383,909.22/529,509.15 = 281,902.68/x
  3. Step 3: Cross multiply
    383,909.22x = 529,509.15 × 281,902.68
  4. Step 4: Simplify right side
    383,909.22x = 149,270,048,469.52
  5. Step 5: Solve for x
    x = 149,270,048,469.52/383,909.22
  6. Step 6: Final answer
    x = 388,816.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.