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Finding the Fourth Proportional to 219,486.60, 329,229.90 and 53,274.60

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Solution

The fourth proportional to 219,486.60, 329,229.90 and 53,274.60 is: 79,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,486.60 : 329,229.90 = 53,274.60 : x
  2. Step 2: Convert to fraction form
    219,486.60/329,229.90 = 53,274.60/x
  3. Step 3: Cross multiply
    219,486.60x = 329,229.90 × 53,274.60
  4. Step 4: Simplify right side
    219,486.60x = 17,539,591,230.54
  5. Step 5: Solve for x
    x = 17,539,591,230.54/219,486.60
  6. Step 6: Final answer
    x = 79,911.90

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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.