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Finding the Fourth Proportional to 18,583.31, 27,887.65 and 7,490.86

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Solution

The fourth proportional to 18,583.31, 27,887.65 and 7,490.86 is: 11,241.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,583.31 : 27,887.65 = 7,490.86 : x
  2. Step 2: Convert to fraction form
    18,583.31/27,887.65 = 7,490.86/x
  3. Step 3: Cross multiply
    18,583.31x = 27,887.65 × 7,490.86
  4. Step 4: Simplify right side
    18,583.31x = 208,902,481.88
  5. Step 5: Solve for x
    x = 208,902,481.88/18,583.31
  6. Step 6: Final answer
    x = 11,241.40

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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.