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Finding the Fourth Proportional to 308,361.99, 462,621.81 and 118,771.46

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Solution

The fourth proportional to 308,361.99, 462,621.81 and 118,771.46 is: 178,187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,361.99 : 462,621.81 = 118,771.46 : x
  2. Step 2: Convert to fraction form
    308,361.99/462,621.81 = 118,771.46/x
  3. Step 3: Cross multiply
    308,361.99x = 462,621.81 × 118,771.46
  4. Step 4: Simplify right side
    308,361.99x = 54,946,269,268.77
  5. Step 5: Solve for x
    x = 54,946,269,268.77/308,361.99
  6. Step 6: Final answer
    x = 178,187.56

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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.