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Finding the Fourth Proportional to 19,794.89, 29,687.14 and 7,318.48

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Solution

The fourth proportional to 19,794.89, 29,687.14 and 7,318.48 is: 10,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,794.89 : 29,687.14 = 7,318.48 : x
  2. Step 2: Convert to fraction form
    19,794.89/29,687.14 = 7,318.48/x
  3. Step 3: Cross multiply
    19,794.89x = 29,687.14 × 7,318.48
  4. Step 4: Simplify right side
    19,794.89x = 217,264,555.32
  5. Step 5: Solve for x
    x = 217,264,555.32/19,794.89
  6. Step 6: Final answer
    x = 10,975.79

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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.