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Finding the Fourth Proportional to 19,611.28, 27,063.28 and 10,658.96

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Solution

The fourth proportional to 19,611.28, 27,063.28 and 10,658.96 is: 14,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.28 : 27,063.28 = 10,658.96 : x
  2. Step 2: Convert to fraction form
    19,611.28/27,063.28 = 10,658.96/x
  3. Step 3: Cross multiply
    19,611.28x = 27,063.28 × 10,658.96
  4. Step 4: Simplify right side
    19,611.28x = 288,466,418.99
  5. Step 5: Solve for x
    x = 288,466,418.99/19,611.28
  6. Step 6: Final answer
    x = 14,709.21

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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.