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Finding the Fourth Proportional to 34,060.75, 47,007.75 and 19,912.75

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Solution

The fourth proportional to 34,060.75, 47,007.75 and 19,912.75 is: 27,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,060.75 : 47,007.75 = 19,912.75 : x
  2. Step 2: Convert to fraction form
    34,060.75/47,007.75 = 19,912.75/x
  3. Step 3: Cross multiply
    34,060.75x = 47,007.75 × 19,912.75
  4. Step 4: Simplify right side
    34,060.75x = 936,053,573.81
  5. Step 5: Solve for x
    x = 936,053,573.81/34,060.75
  6. Step 6: Final answer
    x = 27,481.88

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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.