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Finding the Fourth Proportional to 19,813.58, 29,713.47 and 7,963.83

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Solution

The fourth proportional to 19,813.58, 29,713.47 and 7,963.83 is: 11,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.58 : 29,713.47 = 7,963.83 : x
  2. Step 2: Convert to fraction form
    19,813.58/29,713.47 = 7,963.83/x
  3. Step 3: Cross multiply
    19,813.58x = 29,713.47 × 7,963.83
  4. Step 4: Simplify right side
    19,813.58x = 236,633,023.79
  5. Step 5: Solve for x
    x = 236,633,023.79/19,813.58
  6. Step 6: Final answer
    x = 11,942.97

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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.