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Finding the Fourth Proportional to 19,020.56, 28,535.72 and 7,923.56

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Solution

The fourth proportional to 19,020.56, 28,535.72 and 7,923.56 is: 11,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.56 : 28,535.72 = 7,923.56 : x
  2. Step 2: Convert to fraction form
    19,020.56/28,535.72 = 7,923.56/x
  3. Step 3: Cross multiply
    19,020.56x = 28,535.72 × 7,923.56
  4. Step 4: Simplify right side
    19,020.56x = 226,104,489.56
  5. Step 5: Solve for x
    x = 226,104,489.56/19,020.56
  6. Step 6: Final answer
    x = 11,887.37

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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.