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Finding the Fourth Proportional to 8,615.69, 12,924.43 and 2,375.70

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Solution

The fourth proportional to 8,615.69, 12,924.43 and 2,375.70 is: 3,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.69 : 12,924.43 = 2,375.70 : x
  2. Step 2: Convert to fraction form
    8,615.69/12,924.43 = 2,375.70/x
  3. Step 3: Cross multiply
    8,615.69x = 12,924.43 × 2,375.70
  4. Step 4: Simplify right side
    8,615.69x = 30,704,623.00
  5. Step 5: Solve for x
    x = 30,704,623.00/8,615.69
  6. Step 6: Final answer
    x = 3,563.80

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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.