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Finding the Fourth Proportional to 488,641.92, 674,369.28 and 273,780.72

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Solution

The fourth proportional to 488,641.92, 674,369.28 and 273,780.72 is: 377,841.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,641.92 : 674,369.28 = 273,780.72 : x
  2. Step 2: Convert to fraction form
    488,641.92/674,369.28 = 273,780.72/x
  3. Step 3: Cross multiply
    488,641.92x = 674,369.28 × 273,780.72
  4. Step 4: Simplify right side
    488,641.92x = 184,629,307,024.28
  5. Step 5: Solve for x
    x = 184,629,307,024.28/488,641.92
  6. Step 6: Final answer
    x = 377,841.73

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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.