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Finding the Fourth Proportional to 19,007.65, 28,496.07 and 7,922.65

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Solution

The fourth proportional to 19,007.65, 28,496.07 and 7,922.65 is: 11,877.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.65 : 28,496.07 = 7,922.65 : x
  2. Step 2: Convert to fraction form
    19,007.65/28,496.07 = 7,922.65/x
  3. Step 3: Cross multiply
    19,007.65x = 28,496.07 × 7,922.65
  4. Step 4: Simplify right side
    19,007.65x = 225,764,388.99
  5. Step 5: Solve for x
    x = 225,764,388.99/19,007.65
  6. Step 6: Final answer
    x = 11,877.55

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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.