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Finding the Fourth Proportional to 19,841.60, 29,758.97 and 5,611.07

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Solution

The fourth proportional to 19,841.60, 29,758.97 and 5,611.07 is: 8,415.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,841.60 : 29,758.97 = 5,611.07 : x
  2. Step 2: Convert to fraction form
    19,841.60/29,758.97 = 5,611.07/x
  3. Step 3: Cross multiply
    19,841.60x = 29,758.97 × 5,611.07
  4. Step 4: Simplify right side
    19,841.60x = 166,979,515.00
  5. Step 5: Solve for x
    x = 166,979,515.00/19,841.60
  6. Step 6: Final answer
    x = 8,415.63

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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.