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Finding the Fourth Proportional to 3,858,997.86, 5,789,370.11 and 1,300,143.29

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Solution

The fourth proportional to 3,858,997.86, 5,789,370.11 and 1,300,143.29 is: 1,950,509.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858,997.86 : 5,789,370.11 = 1,300,143.29 : x
  2. Step 2: Convert to fraction form
    3,858,997.86/5,789,370.11 = 1,300,143.29/x
  3. Step 3: Cross multiply
    3,858,997.86x = 5,789,370.11 × 1,300,143.29
  4. Step 4: Simplify right side
    3,858,997.86x = 7,527,010,701,843.06
  5. Step 5: Solve for x
    x = 7,527,010,701,843.06/3,858,997.86
  6. Step 6: Final answer
    x = 1,950,509.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.