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Finding the Fourth Proportional to 308,616.44, 462,877.88 and 83,994.38

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Solution

The fourth proportional to 308,616.44, 462,877.88 and 83,994.38 is: 125,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,616.44 : 462,877.88 = 83,994.38 : x
  2. Step 2: Convert to fraction form
    308,616.44/462,877.88 = 83,994.38/x
  3. Step 3: Cross multiply
    308,616.44x = 462,877.88 × 83,994.38
  4. Step 4: Simplify right side
    308,616.44x = 38,879,137,811.95
  5. Step 5: Solve for x
    x = 38,879,137,811.95/308,616.44
  6. Step 6: Final answer
    x = 125,978.83

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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.