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Finding the Fourth Proportional to 2,200.78, 3,036.72 and 1,362.04

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Solution

The fourth proportional to 2,200.78, 3,036.72 and 1,362.04 is: 1,879.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,200.78 : 3,036.72 = 1,362.04 : x
  2. Step 2: Convert to fraction form
    2,200.78/3,036.72 = 1,362.04/x
  3. Step 3: Cross multiply
    2,200.78x = 3,036.72 × 1,362.04
  4. Step 4: Simplify right side
    2,200.78x = 4,136,134.11
  5. Step 5: Solve for x
    x = 4,136,134.11/2,200.78
  6. Step 6: Final answer
    x = 1,879.39

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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.