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Finding the Fourth Proportional to 202,903.99, 279,997.24 and 111,021.29

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Solution

The fourth proportional to 202,903.99, 279,997.24 and 111,021.29 is: 153,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,903.99 : 279,997.24 = 111,021.29 : x
  2. Step 2: Convert to fraction form
    202,903.99/279,997.24 = 111,021.29/x
  3. Step 3: Cross multiply
    202,903.99x = 279,997.24 × 111,021.29
  4. Step 4: Simplify right side
    202,903.99x = 31,085,655,027.10
  5. Step 5: Solve for x
    x = 31,085,655,027.10/202,903.99
  6. Step 6: Final answer
    x = 153,203.76

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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.