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Finding the Fourth Proportional to 19,811.44, 29,729.04 and 7,329.34

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Solution

The fourth proportional to 19,811.44, 29,729.04 and 7,329.34 is: 10,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.44 : 29,729.04 = 7,329.34 : x
  2. Step 2: Convert to fraction form
    19,811.44/29,729.04 = 7,329.34/x
  3. Step 3: Cross multiply
    19,811.44x = 29,729.04 × 7,329.34
  4. Step 4: Simplify right side
    19,811.44x = 217,894,242.03
  5. Step 5: Solve for x
    x = 217,894,242.03/19,811.44
  6. Step 6: Final answer
    x = 10,998.41

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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.