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Finding the Fourth Proportional to 199,993.82, 276,008.49 and 113,979.11

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Solution

The fourth proportional to 199,993.82, 276,008.49 and 113,979.11 is: 157,300.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,993.82 : 276,008.49 = 113,979.11 : x
  2. Step 2: Convert to fraction form
    199,993.82/276,008.49 = 113,979.11/x
  3. Step 3: Cross multiply
    199,993.82x = 276,008.49 × 113,979.11
  4. Step 4: Simplify right side
    199,993.82x = 31,459,200,662.60
  5. Step 5: Solve for x
    x = 31,459,200,662.60/199,993.82
  6. Step 6: Final answer
    x = 157,300.87

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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.