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Finding the Fourth Proportional to 488,912.83, 674,730.90 and 274,052.95

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Solution

The fourth proportional to 488,912.83, 674,730.90 and 274,052.95 is: 378,210.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,912.83 : 674,730.90 = 274,052.95 : x
  2. Step 2: Convert to fraction form
    488,912.83/674,730.90 = 274,052.95/x
  3. Step 3: Cross multiply
    488,912.83x = 674,730.90 × 274,052.95
  4. Step 4: Simplify right side
    488,912.83x = 184,911,993,601.16
  5. Step 5: Solve for x
    x = 184,911,993,601.16/488,912.83
  6. Step 6: Final answer
    x = 378,210.56

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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.