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Finding the Fourth Proportional to 203,889.74, 305,467.86 and 191,881.57

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Solution

The fourth proportional to 203,889.74, 305,467.86 and 191,881.57 is: 287,477.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,889.74 : 305,467.86 = 191,881.57 : x
  2. Step 2: Convert to fraction form
    203,889.74/305,467.86 = 191,881.57/x
  3. Step 3: Cross multiply
    203,889.74x = 305,467.86 × 191,881.57
  4. Step 4: Simplify right side
    203,889.74x = 58,613,652,440.21
  5. Step 5: Solve for x
    x = 58,613,652,440.21/203,889.74
  6. Step 6: Final answer
    x = 287,477.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.