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Finding the Fourth Proportional to 15,918.82, 23,879.74 and 6,559.47

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Solution

The fourth proportional to 15,918.82, 23,879.74 and 6,559.47 is: 9,839.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.82 : 23,879.74 = 6,559.47 : x
  2. Step 2: Convert to fraction form
    15,918.82/23,879.74 = 6,559.47/x
  3. Step 3: Cross multiply
    15,918.82x = 23,879.74 × 6,559.47
  4. Step 4: Simplify right side
    15,918.82x = 156,638,438.14
  5. Step 5: Solve for x
    x = 156,638,438.14/15,918.82
  6. Step 6: Final answer
    x = 9,839.83

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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.