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Finding the Fourth Proportional to 505,791.06, 697,983.41 and 276,343.40

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Solution

The fourth proportional to 505,791.06, 697,983.41 and 276,343.40 is: 381,349.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,791.06 : 697,983.41 = 276,343.40 : x
  2. Step 2: Convert to fraction form
    505,791.06/697,983.41 = 276,343.40/x
  3. Step 3: Cross multiply
    505,791.06x = 697,983.41 × 276,343.40
  4. Step 4: Simplify right side
    505,791.06x = 192,883,103,791.36
  5. Step 5: Solve for x
    x = 192,883,103,791.36/505,791.06
  6. Step 6: Final answer
    x = 381,349.37

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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.