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Finding the Fourth Proportional to 411,980.50, 568,485.23 and 239,936.06

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Solution

The fourth proportional to 411,980.50, 568,485.23 and 239,936.06 is: 331,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,980.50 : 568,485.23 = 239,936.06 : x
  2. Step 2: Convert to fraction form
    411,980.50/568,485.23 = 239,936.06/x
  3. Step 3: Cross multiply
    411,980.50x = 568,485.23 × 239,936.06
  4. Step 4: Simplify right side
    411,980.50x = 136,400,106,254.39
  5. Step 5: Solve for x
    x = 136,400,106,254.39/411,980.50
  6. Step 6: Final answer
    x = 331,083.89

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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.