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Finding the Fourth Proportional to 205,308.60, 307,674.90 and 163,260.60

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Solution

The fourth proportional to 205,308.60, 307,674.90 and 163,260.60 is: 244,661.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,308.60 : 307,674.90 = 163,260.60 : x
  2. Step 2: Convert to fraction form
    205,308.60/307,674.90 = 163,260.60/x
  3. Step 3: Cross multiply
    205,308.60x = 307,674.90 × 163,260.60
  4. Step 4: Simplify right side
    205,308.60x = 50,231,188,778.94
  5. Step 5: Solve for x
    x = 50,231,188,778.94/205,308.60
  6. Step 6: Final answer
    x = 244,661.88

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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.