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Finding the Fourth Proportional to 331,608.60, 497,485.80 and 106,930.80

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Solution

The fourth proportional to 331,608.60, 497,485.80 and 106,930.80 is: 160,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,608.60 : 497,485.80 = 106,930.80 : x
  2. Step 2: Convert to fraction form
    331,608.60/497,485.80 = 106,930.80/x
  3. Step 3: Cross multiply
    331,608.60x = 497,485.80 × 106,930.80
  4. Step 4: Simplify right side
    331,608.60x = 53,196,554,582.64
  5. Step 5: Solve for x
    x = 53,196,554,582.64/331,608.60
  6. Step 6: Final answer
    x = 160,419.71

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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.