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Finding the Fourth Proportional to 36,653.81, 54,953.81 and 11,679.49

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Solution

The fourth proportional to 36,653.81, 54,953.81 and 11,679.49 is: 17,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,653.81 : 54,953.81 = 11,679.49 : x
  2. Step 2: Convert to fraction form
    36,653.81/54,953.81 = 11,679.49/x
  3. Step 3: Cross multiply
    36,653.81x = 54,953.81 × 11,679.49
  4. Step 4: Simplify right side
    36,653.81x = 641,832,141.19
  5. Step 5: Solve for x
    x = 641,832,141.19/36,653.81
  6. Step 6: Final answer
    x = 17,510.65

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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.