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Finding the Fourth Proportional to 481,357.84, 664,270.32 and 290,476.48

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Solution

The fourth proportional to 481,357.84, 664,270.32 and 290,476.48 is: 400,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,357.84 : 664,270.32 = 290,476.48 : x
  2. Step 2: Convert to fraction form
    481,357.84/664,270.32 = 290,476.48/x
  3. Step 3: Cross multiply
    481,357.84x = 664,270.32 × 290,476.48
  4. Step 4: Simplify right side
    481,357.84x = 192,954,904,322.07
  5. Step 5: Solve for x
    x = 192,954,904,322.07/481,357.84
  6. Step 6: Final answer
    x = 400,855.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.