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Finding the Fourth Proportional to 206,629.60, 309,944.40 and 58,866.40

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Solution

The fourth proportional to 206,629.60, 309,944.40 and 58,866.40 is: 88,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,629.60 : 309,944.40 = 58,866.40 : x
  2. Step 2: Convert to fraction form
    206,629.60/309,944.40 = 58,866.40/x
  3. Step 3: Cross multiply
    206,629.60x = 309,944.40 × 58,866.40
  4. Step 4: Simplify right side
    206,629.60x = 18,245,311,028.16
  5. Step 5: Solve for x
    x = 18,245,311,028.16/206,629.60
  6. Step 6: Final answer
    x = 88,299.60

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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.