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Finding the Fourth Proportional to 8,936.88, 13,415.84 and 5,241.93

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Solution

The fourth proportional to 8,936.88, 13,415.84 and 5,241.93 is: 7,869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.88 : 13,415.84 = 5,241.93 : x
  2. Step 2: Convert to fraction form
    8,936.88/13,415.84 = 5,241.93/x
  3. Step 3: Cross multiply
    8,936.88x = 13,415.84 × 5,241.93
  4. Step 4: Simplify right side
    8,936.88x = 70,324,894.17
  5. Step 5: Solve for x
    x = 70,324,894.17/8,936.88
  6. Step 6: Final answer
    x = 7,869.07

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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.