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Finding the Fourth Proportional to 408,108.69, 611,539.34 and 171,321.39

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Solution

The fourth proportional to 408,108.69, 611,539.34 and 171,321.39 is: 256,720.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,108.69 : 611,539.34 = 171,321.39 : x
  2. Step 2: Convert to fraction form
    408,108.69/611,539.34 = 171,321.39/x
  3. Step 3: Cross multiply
    408,108.69x = 611,539.34 × 171,321.39
  4. Step 4: Simplify right side
    408,108.69x = 104,769,768,911.88
  5. Step 5: Solve for x
    x = 104,769,768,911.88/408,108.69
  6. Step 6: Final answer
    x = 256,720.26

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1.5x scale

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.