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Finding the Fourth Proportional to 325,834.40, 488,751.60 and 89,168.60

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Solution

The fourth proportional to 325,834.40, 488,751.60 and 89,168.60 is: 133,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,834.40 : 488,751.60 = 89,168.60 : x
  2. Step 2: Convert to fraction form
    325,834.40/488,751.60 = 89,168.60/x
  3. Step 3: Cross multiply
    325,834.40x = 488,751.60 × 89,168.60
  4. Step 4: Simplify right side
    325,834.40x = 43,581,295,919.76
  5. Step 5: Solve for x
    x = 43,581,295,919.76/325,834.40
  6. Step 6: Final answer
    x = 133,752.90

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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.