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Finding the Fourth Proportional to 624,872.41, 862,322.61 and 338,391.61

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Solution

The fourth proportional to 624,872.41, 862,322.61 and 338,391.61 is: 466,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,872.41 : 862,322.61 = 338,391.61 : x
  2. Step 2: Convert to fraction form
    624,872.41/862,322.61 = 338,391.61/x
  3. Step 3: Cross multiply
    624,872.41x = 862,322.61 × 338,391.61
  4. Step 4: Simplify right side
    624,872.41x = 291,802,736,337.30
  5. Step 5: Solve for x
    x = 291,802,736,337.30/624,872.41
  6. Step 6: Final answer
    x = 466,979.71

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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.