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Finding the Fourth Proportional to 8,928.34, 13,392.81 and 4,245.94

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Solution

The fourth proportional to 8,928.34, 13,392.81 and 4,245.94 is: 6,369.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.34 : 13,392.81 = 4,245.94 : x
  2. Step 2: Convert to fraction form
    8,928.34/13,392.81 = 4,245.94/x
  3. Step 3: Cross multiply
    8,928.34x = 13,392.81 × 4,245.94
  4. Step 4: Simplify right side
    8,928.34x = 56,865,067.69
  5. Step 5: Solve for x
    x = 56,865,067.69/8,928.34
  6. Step 6: Final answer
    x = 6,369.05

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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.