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Finding the Fourth Proportional to 8,936.58, 13,404.87 and 5,264.40

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Solution

The fourth proportional to 8,936.58, 13,404.87 and 5,264.40 is: 7,896.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.58 : 13,404.87 = 5,264.40 : x
  2. Step 2: Convert to fraction form
    8,936.58/13,404.87 = 5,264.40/x
  3. Step 3: Cross multiply
    8,936.58x = 13,404.87 × 5,264.40
  4. Step 4: Simplify right side
    8,936.58x = 70,568,597.63
  5. Step 5: Solve for x
    x = 70,568,597.63/8,936.58
  6. Step 6: Final answer
    x = 7,896.60

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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.