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Finding the Fourth Proportional to 36,471.79, 54,707.69 and 11,513.78

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Solution

The fourth proportional to 36,471.79, 54,707.69 and 11,513.78 is: 17,270.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,471.79 : 54,707.69 = 11,513.78 : x
  2. Step 2: Convert to fraction form
    36,471.79/54,707.69 = 11,513.78/x
  3. Step 3: Cross multiply
    36,471.79x = 54,707.69 × 11,513.78
  4. Step 4: Simplify right side
    36,471.79x = 629,892,267.37
  5. Step 5: Solve for x
    x = 629,892,267.37/36,471.79
  6. Step 6: Final answer
    x = 17,270.67

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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.