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Finding the Fourth Proportional to 321,881.80, 482,409.60 and 179,726.80

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Solution

The fourth proportional to 321,881.80, 482,409.60 and 179,726.80 is: 269,359.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,881.80 : 482,409.60 = 179,726.80 : x
  2. Step 2: Convert to fraction form
    321,881.80/482,409.60 = 179,726.80/x
  3. Step 3: Cross multiply
    321,881.80x = 482,409.60 × 179,726.80
  4. Step 4: Simplify right side
    321,881.80x = 86,701,933,697.28
  5. Step 5: Solve for x
    x = 86,701,933,697.28/321,881.80
  6. Step 6: Final answer
    x = 269,359.54

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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.