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Finding the Fourth Proportional to 8,963.71, 12,370.22 and 4,930.71

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Solution

The fourth proportional to 8,963.71, 12,370.22 and 4,930.71 is: 6,804.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.71 : 12,370.22 = 4,930.71 : x
  2. Step 2: Convert to fraction form
    8,963.71/12,370.22 = 4,930.71/x
  3. Step 3: Cross multiply
    8,963.71x = 12,370.22 × 4,930.71
  4. Step 4: Simplify right side
    8,963.71x = 60,993,880.95
  5. Step 5: Solve for x
    x = 60,993,880.95/8,963.71
  6. Step 6: Final answer
    x = 6,804.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.