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Finding the Fourth Proportional to 200,620, 276,855.64 and 111,196

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Solution

The fourth proportional to 200,620, 276,855.64 and 111,196 is: 153,450.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,620 : 276,855.64 = 111,196 : x
  2. Step 2: Convert to fraction form
    200,620/276,855.64 = 111,196/x
  3. Step 3: Cross multiply
    200,620x = 276,855.64 × 111,196
  4. Step 4: Simplify right side
    200,620x = 30,785,239,745.44
  5. Step 5: Solve for x
    x = 30,785,239,745.44/200,620
  6. Step 6: Final answer
    x = 153,450.50

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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.