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Finding the Fourth Proportional to 223,910.44, 308,990.82 and 127,132.36

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Solution

The fourth proportional to 223,910.44, 308,990.82 and 127,132.36 is: 175,439.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,910.44 : 308,990.82 = 127,132.36 : x
  2. Step 2: Convert to fraction form
    223,910.44/308,990.82 = 127,132.36/x
  3. Step 3: Cross multiply
    223,910.44x = 308,990.82 × 127,132.36
  4. Step 4: Simplify right side
    223,910.44x = 39,282,732,164.94
  5. Step 5: Solve for x
    x = 39,282,732,164.94/223,910.44
  6. Step 6: Final answer
    x = 175,439.48

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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.