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Finding the Fourth Proportional to 321,309.08, 481,456.68 and 118,626.47

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Solution

The fourth proportional to 321,309.08, 481,456.68 and 118,626.47 is: 177,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,309.08 : 481,456.68 = 118,626.47 : x
  2. Step 2: Convert to fraction form
    321,309.08/481,456.68 = 118,626.47/x
  3. Step 3: Cross multiply
    321,309.08x = 481,456.68 × 118,626.47
  4. Step 4: Simplify right side
    321,309.08x = 57,113,503,999.04
  5. Step 5: Solve for x
    x = 57,113,503,999.04/321,309.08
  6. Step 6: Final answer
    x = 177,752.54

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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.