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Finding the Fourth Proportional to 325,920.60, 488,224.80 and 168,237.90

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Solution

The fourth proportional to 325,920.60, 488,224.80 and 168,237.90 is: 252,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,920.60 : 488,224.80 = 168,237.90 : x
  2. Step 2: Convert to fraction form
    325,920.60/488,224.80 = 168,237.90/x
  3. Step 3: Cross multiply
    325,920.60x = 488,224.80 × 168,237.90
  4. Step 4: Simplify right side
    325,920.60x = 82,137,915,079.92
  5. Step 5: Solve for x
    x = 82,137,915,079.92/325,920.60
  6. Step 6: Final answer
    x = 252,018.18

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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.