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Finding the Fourth Proportional to 325,766.56, 488,650.20 and 89,091.76

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Solution

The fourth proportional to 325,766.56, 488,650.20 and 89,091.76 is: 133,637.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,766.56 : 488,650.20 = 89,091.76 : x
  2. Step 2: Convert to fraction form
    325,766.56/488,650.20 = 89,091.76/x
  3. Step 3: Cross multiply
    325,766.56x = 488,650.20 × 89,091.76
  4. Step 4: Simplify right side
    325,766.56x = 43,534,706,342.35
  5. Step 5: Solve for x
    x = 43,534,706,342.35/325,766.56
  6. Step 6: Final answer
    x = 133,637.74

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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.