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Finding the Fourth Proportional to 1,266,609.77, 1,747,924.13 and 685,839.23

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Solution

The fourth proportional to 1,266,609.77, 1,747,924.13 and 685,839.23 is: 946,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,609.77 : 1,747,924.13 = 685,839.23 : x
  2. Step 2: Convert to fraction form
    1,266,609.77/1,747,924.13 = 685,839.23/x
  3. Step 3: Cross multiply
    1,266,609.77x = 1,747,924.13 × 685,839.23
  4. Step 4: Simplify right side
    1,266,609.77x = 1,198,794,932,392.60
  5. Step 5: Solve for x
    x = 1,198,794,932,392.60/1,266,609.77
  6. Step 6: Final answer
    x = 946,459.57

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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.