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Finding the Fourth Proportional to 199,499.56, 275,309.28 and 127,879.54

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Solution

The fourth proportional to 199,499.56, 275,309.28 and 127,879.54 is: 176,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,499.56 : 275,309.28 = 127,879.54 : x
  2. Step 2: Convert to fraction form
    199,499.56/275,309.28 = 127,879.54/x
  3. Step 3: Cross multiply
    199,499.56x = 275,309.28 × 127,879.54
  4. Step 4: Simplify right side
    199,499.56x = 35,206,424,084.13
  5. Step 5: Solve for x
    x = 35,206,424,084.13/199,499.56
  6. Step 6: Final answer
    x = 176,473.69

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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.