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Finding the Fourth Proportional to 17,679.78, 26,514.01 and 5,830.90

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Solution

The fourth proportional to 17,679.78, 26,514.01 and 5,830.90 is: 8,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,679.78 : 26,514.01 = 5,830.90 : x
  2. Step 2: Convert to fraction form
    17,679.78/26,514.01 = 5,830.90/x
  3. Step 3: Cross multiply
    17,679.78x = 26,514.01 × 5,830.90
  4. Step 4: Simplify right side
    17,679.78x = 154,600,379.18
  5. Step 5: Solve for x
    x = 154,600,379.18/17,679.78
  6. Step 6: Final answer
    x = 8,744.47

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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.