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Finding the Fourth Proportional to 11,809.63, 17,710.28 and 3,487.44

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Solution

The fourth proportional to 11,809.63, 17,710.28 and 3,487.44 is: 5,229.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,809.63 : 17,710.28 = 3,487.44 : x
  2. Step 2: Convert to fraction form
    11,809.63/17,710.28 = 3,487.44/x
  3. Step 3: Cross multiply
    11,809.63x = 17,710.28 × 3,487.44
  4. Step 4: Simplify right side
    11,809.63x = 61,763,538.88
  5. Step 5: Solve for x
    x = 61,763,538.88/11,809.63
  6. Step 6: Final answer
    x = 5,229.93

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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.