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Finding the Fourth Proportional to 638.41, 957.06 and 541.54

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Solution

The fourth proportional to 638.41, 957.06 and 541.54 is: 811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.41 : 957.06 = 541.54 : x
  2. Step 2: Convert to fraction form
    638.41/957.06 = 541.54/x
  3. Step 3: Cross multiply
    638.41x = 957.06 × 541.54
  4. Step 4: Simplify right side
    638.41x = 518,286.27
  5. Step 5: Solve for x
    x = 518,286.27/638.41
  6. Step 6: Final answer
    x = 811.84

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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.