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Finding the Fourth Proportional to 488,697.14, 674,428.74 and 273,906.38

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Solution

The fourth proportional to 488,697.14, 674,428.74 and 273,906.38 is: 378,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,697.14 : 674,428.74 = 273,906.38 : x
  2. Step 2: Convert to fraction form
    488,697.14/674,428.74 = 273,906.38/x
  3. Step 3: Cross multiply
    488,697.14x = 674,428.74 × 273,906.38
  4. Step 4: Simplify right side
    488,697.14x = 184,730,334,741.36
  5. Step 5: Solve for x
    x = 184,730,334,741.36/488,697.14
  6. Step 6: Final answer
    x = 378,005.76

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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.