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Finding the Fourth Proportional to 325,115.60, 487,608.60 and 156,635.60

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Solution

The fourth proportional to 325,115.60, 487,608.60 and 156,635.60 is: 234,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,115.60 : 487,608.60 = 156,635.60 : x
  2. Step 2: Convert to fraction form
    325,115.60/487,608.60 = 156,635.60/x
  3. Step 3: Cross multiply
    325,115.60x = 487,608.60 × 156,635.60
  4. Step 4: Simplify right side
    325,115.60x = 76,376,865,626.16
  5. Step 5: Solve for x
    x = 76,376,865,626.16/325,115.60
  6. Step 6: Final answer
    x = 234,922.18

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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.