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Finding the Fourth Proportional to 287,593.92, 431,239.79 and 127,600.54

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Solution

The fourth proportional to 287,593.92, 431,239.79 and 127,600.54 is: 191,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,593.92 : 431,239.79 = 127,600.54 : x
  2. Step 2: Convert to fraction form
    287,593.92/431,239.79 = 127,600.54/x
  3. Step 3: Cross multiply
    287,593.92x = 431,239.79 × 127,600.54
  4. Step 4: Simplify right side
    287,593.92x = 55,026,430,073.49
  5. Step 5: Solve for x
    x = 55,026,430,073.49/287,593.92
  6. Step 6: Final answer
    x = 191,333.77

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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.