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Finding the Fourth Proportional to 19,794.93, 29,682.73 and 7,320.79

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Solution

The fourth proportional to 19,794.93, 29,682.73 and 7,320.79 is: 10,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,794.93 : 29,682.73 = 7,320.79 : x
  2. Step 2: Convert to fraction form
    19,794.93/29,682.73 = 7,320.79/x
  3. Step 3: Cross multiply
    19,794.93x = 29,682.73 × 7,320.79
  4. Step 4: Simplify right side
    19,794.93x = 217,301,032.96
  5. Step 5: Solve for x
    x = 217,301,032.96/19,794.93
  6. Step 6: Final answer
    x = 10,977.61

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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.