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Finding the Fourth Proportional to 505,866.30, 698,087.06 and 276,418.54

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Solution

The fourth proportional to 505,866.30, 698,087.06 and 276,418.54 is: 381,452.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,866.30 : 698,087.06 = 276,418.54 : x
  2. Step 2: Convert to fraction form
    505,866.30/698,087.06 = 276,418.54/x
  3. Step 3: Cross multiply
    505,866.30x = 698,087.06 × 276,418.54
  4. Step 4: Simplify right side
    505,866.30x = 192,964,204,536.00
  5. Step 5: Solve for x
    x = 192,964,204,536.00/505,866.30
  6. Step 6: Final answer
    x = 381,452.98

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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.