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Finding the Fourth Proportional to 9,408.25, 12,983.19 and 5,375.26

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Solution

The fourth proportional to 9,408.25, 12,983.19 and 5,375.26 is: 7,417.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.25 : 12,983.19 = 5,375.26 : x
  2. Step 2: Convert to fraction form
    9,408.25/12,983.19 = 5,375.26/x
  3. Step 3: Cross multiply
    9,408.25x = 12,983.19 × 5,375.26
  4. Step 4: Simplify right side
    9,408.25x = 69,788,017.95
  5. Step 5: Solve for x
    x = 69,788,017.95/9,408.25
  6. Step 6: Final answer
    x = 7,417.75

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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.