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Finding the Fourth Proportional to 9,930.88, 13,690.13 and 7,093.25

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Solution

The fourth proportional to 9,930.88, 13,690.13 and 7,093.25 is: 9,778.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.88 : 13,690.13 = 7,093.25 : x
  2. Step 2: Convert to fraction form
    9,930.88/13,690.13 = 7,093.25/x
  3. Step 3: Cross multiply
    9,930.88x = 13,690.13 × 7,093.25
  4. Step 4: Simplify right side
    9,930.88x = 97,107,514.62
  5. Step 5: Solve for x
    x = 97,107,514.62/9,930.88
  6. Step 6: Final answer
    x = 9,778.34

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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.