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Finding the Fourth Proportional to 20,196.76, 30,248.11 and 19,496.11

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Solution

The fourth proportional to 20,196.76, 30,248.11 and 19,496.11 is: 29,198.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.76 : 30,248.11 = 19,496.11 : x
  2. Step 2: Convert to fraction form
    20,196.76/30,248.11 = 19,496.11/x
  3. Step 3: Cross multiply
    20,196.76x = 30,248.11 × 19,496.11
  4. Step 4: Simplify right side
    20,196.76x = 589,720,479.85
  5. Step 5: Solve for x
    x = 589,720,479.85/20,196.76
  6. Step 6: Final answer
    x = 29,198.77

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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.