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Finding the Fourth Proportional to 1,224,960.11, 1,837,685.43 and 685,982.86

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Solution

The fourth proportional to 1,224,960.11, 1,837,685.43 and 685,982.86 is: 1,029,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,960.11 : 1,837,685.43 = 685,982.86 : x
  2. Step 2: Convert to fraction form
    1,224,960.11/1,837,685.43 = 685,982.86/x
  3. Step 3: Cross multiply
    1,224,960.11x = 1,837,685.43 × 685,982.86
  4. Step 4: Simplify right side
    1,224,960.11x = 1,260,620,694,433.39
  5. Step 5: Solve for x
    x = 1,260,620,694,433.39/1,224,960.11
  6. Step 6: Final answer
    x = 1,029,111.63

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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.