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Finding the Fourth Proportional to 19,800.92, 29,698.20 and 7,326.86

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Solution

The fourth proportional to 19,800.92, 29,698.20 and 7,326.86 is: 10,989.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.92 : 29,698.20 = 7,326.86 : x
  2. Step 2: Convert to fraction form
    19,800.92/29,698.20 = 7,326.86/x
  3. Step 3: Cross multiply
    19,800.92x = 29,698.20 × 7,326.86
  4. Step 4: Simplify right side
    19,800.92x = 217,594,553.65
  5. Step 5: Solve for x
    x = 217,594,553.65/19,800.92
  6. Step 6: Final answer
    x = 10,989.11

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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.