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Finding the Fourth Proportional to 11,938.44, 17,924.94 and 8,655.24

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Solution

The fourth proportional to 11,938.44, 17,924.94 and 8,655.24 is: 12,995.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.44 : 17,924.94 = 8,655.24 : x
  2. Step 2: Convert to fraction form
    11,938.44/17,924.94 = 8,655.24/x
  3. Step 3: Cross multiply
    11,938.44x = 17,924.94 × 8,655.24
  4. Step 4: Simplify right side
    11,938.44x = 155,144,657.69
  5. Step 5: Solve for x
    x = 155,144,657.69/11,938.44
  6. Step 6: Final answer
    x = 12,995.39

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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.