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Finding the Fourth Proportional to 823,912.80, 1,233,244.80 and 587,716.80

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Solution

The fourth proportional to 823,912.80, 1,233,244.80 and 587,716.80 is: 879,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,912.80 : 1,233,244.80 = 587,716.80 : x
  2. Step 2: Convert to fraction form
    823,912.80/1,233,244.80 = 587,716.80/x
  3. Step 3: Cross multiply
    823,912.80x = 1,233,244.80 × 587,716.80
  4. Step 4: Simplify right side
    823,912.80x = 724,798,687,472.64
  5. Step 5: Solve for x
    x = 724,798,687,472.64/823,912.80
  6. Step 6: Final answer
    x = 879,703.15

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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.