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Finding the Fourth Proportional to 9,167.39, 12,648.44 and 5,188.41

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Solution

The fourth proportional to 9,167.39, 12,648.44 and 5,188.41 is: 7,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,167.39 : 12,648.44 = 5,188.41 : x
  2. Step 2: Convert to fraction form
    9,167.39/12,648.44 = 5,188.41/x
  3. Step 3: Cross multiply
    9,167.39x = 12,648.44 × 5,188.41
  4. Step 4: Simplify right side
    9,167.39x = 65,625,357.85
  5. Step 5: Solve for x
    x = 65,625,357.85/9,167.39
  6. Step 6: Final answer
    x = 7,158.57

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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.