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Finding the Fourth Proportional to 18,694.64, 28,040.34 and 6,848.48

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Solution

The fourth proportional to 18,694.64, 28,040.34 and 6,848.48 is: 10,272.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.64 : 28,040.34 = 6,848.48 : x
  2. Step 2: Convert to fraction form
    18,694.64/28,040.34 = 6,848.48/x
  3. Step 3: Cross multiply
    18,694.64x = 28,040.34 × 6,848.48
  4. Step 4: Simplify right side
    18,694.64x = 192,033,707.68
  5. Step 5: Solve for x
    x = 192,033,707.68/18,694.64
  6. Step 6: Final answer
    x = 10,272.13

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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.