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Finding the Fourth Proportional to 356,634.54, 535,021.88 and 131,996.92

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Solution

The fourth proportional to 356,634.54, 535,021.88 and 131,996.92 is: 198,021.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,634.54 : 535,021.88 = 131,996.92 : x
  2. Step 2: Convert to fraction form
    356,634.54/535,021.88 = 131,996.92/x
  3. Step 3: Cross multiply
    356,634.54x = 535,021.88 × 131,996.92
  4. Step 4: Simplify right side
    356,634.54x = 70,621,240,292.61
  5. Step 5: Solve for x
    x = 70,621,240,292.61/356,634.54
  6. Step 6: Final answer
    x = 198,021.31

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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.