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Finding the Fourth Proportional to 311,811.80, 468,063.30 and 193,616.60

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Solution

The fourth proportional to 311,811.80, 468,063.30 and 193,616.60 is: 290,639.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,811.80 : 468,063.30 = 193,616.60 : x
  2. Step 2: Convert to fraction form
    311,811.80/468,063.30 = 193,616.60/x
  3. Step 3: Cross multiply
    311,811.80x = 468,063.30 × 193,616.60
  4. Step 4: Simplify right side
    311,811.80x = 90,624,824,730.78
  5. Step 5: Solve for x
    x = 90,624,824,730.78/311,811.80
  6. Step 6: Final answer
    x = 290,639.50

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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.