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Finding the Fourth Proportional to 19,611.66, 27,064.13 and 10,659.09

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Solution

The fourth proportional to 19,611.66, 27,064.13 and 10,659.09 is: 14,709.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.66 : 27,064.13 = 10,659.09 : x
  2. Step 2: Convert to fraction form
    19,611.66/27,064.13 = 10,659.09/x
  3. Step 3: Cross multiply
    19,611.66x = 27,064.13 × 10,659.09
  4. Step 4: Simplify right side
    19,611.66x = 288,478,997.44
  5. Step 5: Solve for x
    x = 288,478,997.44/19,611.66
  6. Step 6: Final answer
    x = 14,709.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.