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Finding the Fourth Proportional to 505,791.51, 697,984.13 and 276,343.87

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Solution

The fourth proportional to 505,791.51, 697,984.13 and 276,343.87 is: 381,350.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,791.51 : 697,984.13 = 276,343.87 : x
  2. Step 2: Convert to fraction form
    505,791.51/697,984.13 = 276,343.87/x
  3. Step 3: Cross multiply
    505,791.51x = 697,984.13 × 276,343.87
  4. Step 4: Simplify right side
    505,791.51x = 192,883,632,192.86
  5. Step 5: Solve for x
    x = 192,883,632,192.86/505,791.51
  6. Step 6: Final answer
    x = 381,350.08

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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.