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Finding the Fourth Proportional to 9,169.44, 12,649.41 and 5,392.43

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Solution

The fourth proportional to 9,169.44, 12,649.41 and 5,392.43 is: 7,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,169.44 : 12,649.41 = 5,392.43 : x
  2. Step 2: Convert to fraction form
    9,169.44/12,649.41 = 5,392.43/x
  3. Step 3: Cross multiply
    9,169.44x = 12,649.41 × 5,392.43
  4. Step 4: Simplify right side
    9,169.44x = 68,210,994.72
  5. Step 5: Solve for x
    x = 68,210,994.72/9,169.44
  6. Step 6: Final answer
    x = 7,438.95

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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.