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Finding the Fourth Proportional to 19,551.26, 29,326.88 and 7,861.74

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Solution

The fourth proportional to 19,551.26, 29,326.88 and 7,861.74 is: 11,792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,551.26 : 29,326.88 = 7,861.74 : x
  2. Step 2: Convert to fraction form
    19,551.26/29,326.88 = 7,861.74/x
  3. Step 3: Cross multiply
    19,551.26x = 29,326.88 × 7,861.74
  4. Step 4: Simplify right side
    19,551.26x = 230,560,266.26
  5. Step 5: Solve for x
    x = 230,560,266.26/19,551.26
  6. Step 6: Final answer
    x = 11,792.61

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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.