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Finding the Fourth Proportional to 17,771.90, 26,648.90 and 5,921.47

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Solution

The fourth proportional to 17,771.90, 26,648.90 and 5,921.47 is: 8,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,771.90 : 26,648.90 = 5,921.47 : x
  2. Step 2: Convert to fraction form
    17,771.90/26,648.90 = 5,921.47/x
  3. Step 3: Cross multiply
    17,771.90x = 26,648.90 × 5,921.47
  4. Step 4: Simplify right side
    17,771.90x = 157,800,565.65
  5. Step 5: Solve for x
    x = 157,800,565.65/17,771.90
  6. Step 6: Final answer
    x = 8,879.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.