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Finding the Fourth Proportional to 411,816.88, 568,290.24 and 239,739.28

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Solution

The fourth proportional to 411,816.88, 568,290.24 and 239,739.28 is: 330,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,816.88 : 568,290.24 = 239,739.28 : x
  2. Step 2: Convert to fraction form
    411,816.88/568,290.24 = 239,739.28/x
  3. Step 3: Cross multiply
    411,816.88x = 568,290.24 × 239,739.28
  4. Step 4: Simplify right side
    411,816.88x = 136,241,494,282.51
  5. Step 5: Solve for x
    x = 136,241,494,282.51/411,816.88
  6. Step 6: Final answer
    x = 330,830.28

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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.