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Finding the Fourth Proportional to 488,809.80, 674,584.44 and 274,018.92

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Solution

The fourth proportional to 488,809.80, 674,584.44 and 274,018.92 is: 378,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,809.80 : 674,584.44 = 274,018.92 : x
  2. Step 2: Convert to fraction form
    488,809.80/674,584.44 = 274,018.92/x
  3. Step 3: Cross multiply
    488,809.80x = 674,584.44 × 274,018.92
  4. Step 4: Simplify right side
    488,809.80x = 184,848,899,697.61
  5. Step 5: Solve for x
    x = 184,848,899,697.61/488,809.80
  6. Step 6: Final answer
    x = 378,161.20

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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.