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Finding the Fourth Proportional to 19,028.56, 28,530.54 and 7,942.84

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Solution

The fourth proportional to 19,028.56, 28,530.54 and 7,942.84 is: 11,909.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,028.56 : 28,530.54 = 7,942.84 : x
  2. Step 2: Convert to fraction form
    19,028.56/28,530.54 = 7,942.84/x
  3. Step 3: Cross multiply
    19,028.56x = 28,530.54 × 7,942.84
  4. Step 4: Simplify right side
    19,028.56x = 226,613,514.33
  5. Step 5: Solve for x
    x = 226,613,514.33/19,028.56
  6. Step 6: Final answer
    x = 11,909.13

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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.