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Finding the Fourth Proportional to 325,433.86, 488,136.21 and 88,775.78

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Solution

The fourth proportional to 325,433.86, 488,136.21 and 88,775.78 is: 133,159.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,433.86 : 488,136.21 = 88,775.78 : x
  2. Step 2: Convert to fraction form
    325,433.86/488,136.21 = 88,775.78/x
  3. Step 3: Cross multiply
    325,433.86x = 488,136.21 × 88,775.78
  4. Step 4: Simplify right side
    325,433.86x = 43,334,672,788.99
  5. Step 5: Solve for x
    x = 43,334,672,788.99/325,433.86
  6. Step 6: Final answer
    x = 133,159.69

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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.