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Finding the Fourth Proportional to 19,606.23, 29,409.87 and 4,815.09

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Solution

The fourth proportional to 19,606.23, 29,409.87 and 4,815.09 is: 7,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,606.23 : 29,409.87 = 4,815.09 : x
  2. Step 2: Convert to fraction form
    19,606.23/29,409.87 = 4,815.09/x
  3. Step 3: Cross multiply
    19,606.23x = 29,409.87 × 4,815.09
  4. Step 4: Simplify right side
    19,606.23x = 141,611,170.94
  5. Step 5: Solve for x
    x = 141,611,170.94/19,606.23
  6. Step 6: Final answer
    x = 7,222.76

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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.