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Finding the Fourth Proportional to 11,590.88, 15,993.27 and 6,811.60

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Solution

The fourth proportional to 11,590.88, 15,993.27 and 6,811.60 is: 9,398.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,590.88 : 15,993.27 = 6,811.60 : x
  2. Step 2: Convert to fraction form
    11,590.88/15,993.27 = 6,811.60/x
  3. Step 3: Cross multiply
    11,590.88x = 15,993.27 × 6,811.60
  4. Step 4: Simplify right side
    11,590.88x = 108,939,757.93
  5. Step 5: Solve for x
    x = 108,939,757.93/11,590.88
  6. Step 6: Final answer
    x = 9,398.75

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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.