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Finding the Fourth Proportional to 36,640.71, 54,965.05 and 11,674.89

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Solution

The fourth proportional to 36,640.71, 54,965.05 and 11,674.89 is: 17,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,640.71 : 54,965.05 = 11,674.89 : x
  2. Step 2: Convert to fraction form
    36,640.71/54,965.05 = 11,674.89/x
  3. Step 3: Cross multiply
    36,640.71x = 54,965.05 × 11,674.89
  4. Step 4: Simplify right side
    36,640.71x = 641,710,883.41
  5. Step 5: Solve for x
    x = 641,710,883.41/36,640.71
  6. Step 6: Final answer
    x = 17,513.60

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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.