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Finding the Fourth Proportional to 505,777.20, 697,951.89 and 276,342.44

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Solution

The fourth proportional to 505,777.20, 697,951.89 and 276,342.44 is: 381,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,777.20 : 697,951.89 = 276,342.44 : x
  2. Step 2: Convert to fraction form
    505,777.20/697,951.89 = 276,342.44/x
  3. Step 3: Cross multiply
    505,777.20x = 697,951.89 × 276,342.44
  4. Step 4: Simplify right side
    505,777.20x = 192,873,724,795.45
  5. Step 5: Solve for x
    x = 192,873,724,795.45/505,777.20
  6. Step 6: Final answer
    x = 381,341.28

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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.