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Finding the Fourth Proportional to 321,963.68, 482,945.56 and 111,601.60

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Solution

The fourth proportional to 321,963.68, 482,945.56 and 111,601.60 is: 167,402.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,963.68 : 482,945.56 = 111,601.60 : x
  2. Step 2: Convert to fraction form
    321,963.68/482,945.56 = 111,601.60/x
  3. Step 3: Cross multiply
    321,963.68x = 482,945.56 × 111,601.60
  4. Step 4: Simplify right side
    321,963.68x = 53,897,497,208.90
  5. Step 5: Solve for x
    x = 53,897,497,208.90/321,963.68
  6. Step 6: Final answer
    x = 167,402.41

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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.