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Finding the Fourth Proportional to 488,863.72, 674,629.80 and 274,003.80

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Solution

The fourth proportional to 488,863.72, 674,629.80 and 274,003.80 is: 378,124.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,863.72 : 674,629.80 = 274,003.80 : x
  2. Step 2: Convert to fraction form
    488,863.72/674,629.80 = 274,003.80/x
  3. Step 3: Cross multiply
    488,863.72x = 674,629.80 × 274,003.80
  4. Step 4: Simplify right side
    488,863.72x = 184,851,125,235.86
  5. Step 5: Solve for x
    x = 184,851,125,235.86/488,863.72
  6. Step 6: Final answer
    x = 378,124.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.