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Finding the Fourth Proportional to 19,698.25, 29,530.80 and 9,162.92

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Solution

The fourth proportional to 19,698.25, 29,530.80 and 9,162.92 is: 13,736.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,698.25 : 29,530.80 = 9,162.92 : x
  2. Step 2: Convert to fraction form
    19,698.25/29,530.80 = 9,162.92/x
  3. Step 3: Cross multiply
    19,698.25x = 29,530.80 × 9,162.92
  4. Step 4: Simplify right side
    19,698.25x = 270,588,357.94
  5. Step 5: Solve for x
    x = 270,588,357.94/19,698.25
  6. Step 6: Final answer
    x = 13,736.67

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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.