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Finding the Fourth Proportional to 325,702.20, 488,601.90 and 115,323.60

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Solution

The fourth proportional to 325,702.20, 488,601.90 and 115,323.60 is: 173,002.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,702.20 : 488,601.90 = 115,323.60 : x
  2. Step 2: Convert to fraction form
    325,702.20/488,601.90 = 115,323.60/x
  3. Step 3: Cross multiply
    325,702.20x = 488,601.90 × 115,323.60
  4. Step 4: Simplify right side
    325,702.20x = 56,347,330,074.84
  5. Step 5: Solve for x
    x = 56,347,330,074.84/325,702.20
  6. Step 6: Final answer
    x = 173,002.61

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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.