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Finding the Fourth Proportional to 9,121.64, 13,672.42 and 3,573.94

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Solution

The fourth proportional to 9,121.64, 13,672.42 and 3,573.94 is: 5,356.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.64 : 13,672.42 = 3,573.94 : x
  2. Step 2: Convert to fraction form
    9,121.64/13,672.42 = 3,573.94/x
  3. Step 3: Cross multiply
    9,121.64x = 13,672.42 × 3,573.94
  4. Step 4: Simplify right side
    9,121.64x = 48,864,408.73
  5. Step 5: Solve for x
    x = 48,864,408.73/9,121.64
  6. Step 6: Final answer
    x = 5,356.98

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1.5x scale

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.