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Finding the Fourth Proportional to 205,396.95, 308,092.06 and 79,064.62

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Solution

The fourth proportional to 205,396.95, 308,092.06 and 79,064.62 is: 118,595.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,396.95 : 308,092.06 = 79,064.62 : x
  2. Step 2: Convert to fraction form
    205,396.95/308,092.06 = 79,064.62/x
  3. Step 3: Cross multiply
    205,396.95x = 308,092.06 × 79,064.62
  4. Step 4: Simplify right side
    205,396.95x = 24,359,181,648.92
  5. Step 5: Solve for x
    x = 24,359,181,648.92/205,396.95
  6. Step 6: Final answer
    x = 118,595.63

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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.