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Finding the Fourth Proportional to 351,712.41, 485,362.45 and 190,571.82

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Solution

The fourth proportional to 351,712.41, 485,362.45 and 190,571.82 is: 262,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,712.41 : 485,362.45 = 190,571.82 : x
  2. Step 2: Convert to fraction form
    351,712.41/485,362.45 = 190,571.82/x
  3. Step 3: Cross multiply
    351,712.41x = 485,362.45 × 190,571.82
  4. Step 4: Simplify right side
    351,712.41x = 92,496,405,456.16
  5. Step 5: Solve for x
    x = 92,496,405,456.16/351,712.41
  6. Step 6: Final answer
    x = 262,988.75

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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.