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Finding the Fourth Proportional to 36,636.60, 54,921.60 and 13,246.50

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Solution

The fourth proportional to 36,636.60, 54,921.60 and 13,246.50 is: 19,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,636.60 : 54,921.60 = 13,246.50 : x
  2. Step 2: Convert to fraction form
    36,636.60/54,921.60 = 13,246.50/x
  3. Step 3: Cross multiply
    36,636.60x = 54,921.60 × 13,246.50
  4. Step 4: Simplify right side
    36,636.60x = 727,518,974.40
  5. Step 5: Solve for x
    x = 727,518,974.40/36,636.60
  6. Step 6: Final answer
    x = 19,857.71

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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.