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Finding the Fourth Proportional to 483,903.56, 667,824.32 and 290,318.55

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Solution

The fourth proportional to 483,903.56, 667,824.32 and 290,318.55 is: 400,662.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,903.56 : 667,824.32 = 290,318.55 : x
  2. Step 2: Convert to fraction form
    483,903.56/667,824.32 = 290,318.55/x
  3. Step 3: Cross multiply
    483,903.56x = 667,824.32 × 290,318.55
  4. Step 4: Simplify right side
    483,903.56x = 193,881,786,785.54
  5. Step 5: Solve for x
    x = 193,881,786,785.54/483,903.56
  6. Step 6: Final answer
    x = 400,662.04

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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.