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Finding the Fourth Proportional to 34,392.44, 47,469.99 and 20,971.08

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Solution

The fourth proportional to 34,392.44, 47,469.99 and 20,971.08 is: 28,945.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,392.44 : 47,469.99 = 20,971.08 : x
  2. Step 2: Convert to fraction form
    34,392.44/47,469.99 = 20,971.08/x
  3. Step 3: Cross multiply
    34,392.44x = 47,469.99 × 20,971.08
  4. Step 4: Simplify right side
    34,392.44x = 995,496,957.89
  5. Step 5: Solve for x
    x = 995,496,957.89/34,392.44
  6. Step 6: Final answer
    x = 28,945.23

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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.