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Finding the Fourth Proportional to 18,572.45, 25,626.02 and 11,021.54

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Solution

The fourth proportional to 18,572.45, 25,626.02 and 11,021.54 is: 15,207.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.45 : 25,626.02 = 11,021.54 : x
  2. Step 2: Convert to fraction form
    18,572.45/25,626.02 = 11,021.54/x
  3. Step 3: Cross multiply
    18,572.45x = 25,626.02 × 11,021.54
  4. Step 4: Simplify right side
    18,572.45x = 282,438,021.23
  5. Step 5: Solve for x
    x = 282,438,021.23/18,572.45
  6. Step 6: Final answer
    x = 15,207.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.