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Finding the Fourth Proportional to 2,238.93, 3,358.80 and 922.68

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Solution

The fourth proportional to 2,238.93, 3,358.80 and 922.68 is: 1,384.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,238.93 : 3,358.80 = 922.68 : x
  2. Step 2: Convert to fraction form
    2,238.93/3,358.80 = 922.68/x
  3. Step 3: Cross multiply
    2,238.93x = 3,358.80 × 922.68
  4. Step 4: Simplify right side
    2,238.93x = 3,099,097.58
  5. Step 5: Solve for x
    x = 3,099,097.58/2,238.93
  6. Step 6: Final answer
    x = 1,384.19

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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.