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Finding the Fourth Proportional to 483,903.47, 667,824.19 and 290,318.46

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Solution

The fourth proportional to 483,903.47, 667,824.19 and 290,318.46 is: 400,661.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,903.47 : 667,824.19 = 290,318.46 : x
  2. Step 2: Convert to fraction form
    483,903.47/667,824.19 = 290,318.46/x
  3. Step 3: Cross multiply
    483,903.47x = 667,824.19 × 290,318.46
  4. Step 4: Simplify right side
    483,903.47x = 193,881,689,665.75
  5. Step 5: Solve for x
    x = 193,881,689,665.75/483,903.47
  6. Step 6: Final answer
    x = 400,661.92

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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.