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Finding the Fourth Proportional to 205,745.80, 308,618.70 and 164,273.80

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Solution

The fourth proportional to 205,745.80, 308,618.70 and 164,273.80 is: 246,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,745.80 : 308,618.70 = 164,273.80 : x
  2. Step 2: Convert to fraction form
    205,745.80/308,618.70 = 164,273.80/x
  3. Step 3: Cross multiply
    205,745.80x = 308,618.70 × 164,273.80
  4. Step 4: Simplify right side
    205,745.80x = 50,697,966,600.06
  5. Step 5: Solve for x
    x = 50,697,966,600.06/205,745.80
  6. Step 6: Final answer
    x = 246,410.70

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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.