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Finding the Fourth Proportional to 325,908.20, 488,910.90 and 115,529.60

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Solution

The fourth proportional to 325,908.20, 488,910.90 and 115,529.60 is: 173,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,908.20 : 488,910.90 = 115,529.60 : x
  2. Step 2: Convert to fraction form
    325,908.20/488,910.90 = 115,529.60/x
  3. Step 3: Cross multiply
    325,908.20x = 488,910.90 × 115,529.60
  4. Step 4: Simplify right side
    325,908.20x = 56,483,680,712.64
  5. Step 5: Solve for x
    x = 56,483,680,712.64/325,908.20
  6. Step 6: Final answer
    x = 173,311.63

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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.