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Finding the Fourth Proportional to 19,662.67, 29,469.39 and 15,486.19

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Solution

The fourth proportional to 19,662.67, 29,469.39 and 15,486.19 is: 23,209.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.67 : 29,469.39 = 15,486.19 : x
  2. Step 2: Convert to fraction form
    19,662.67/29,469.39 = 15,486.19/x
  3. Step 3: Cross multiply
    19,662.67x = 29,469.39 × 15,486.19
  4. Step 4: Simplify right side
    19,662.67x = 456,368,571.64
  5. Step 5: Solve for x
    x = 456,368,571.64/19,662.67
  6. Step 6: Final answer
    x = 23,209.89

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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.