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Finding the Fourth Proportional to 13,636.35, 20,439.35 and 5,736.50

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Solution

The fourth proportional to 13,636.35, 20,439.35 and 5,736.50 is: 8,598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.35 : 20,439.35 = 5,736.50 : x
  2. Step 2: Convert to fraction form
    13,636.35/20,439.35 = 5,736.50/x
  3. Step 3: Cross multiply
    13,636.35x = 20,439.35 × 5,736.50
  4. Step 4: Simplify right side
    13,636.35x = 117,250,445.79
  5. Step 5: Solve for x
    x = 117,250,445.79/13,636.35
  6. Step 6: Final answer
    x = 8,598.37

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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.