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Finding the Fourth Proportional to 13,496.60, 20,255.16 and 4,738.88

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Solution

The fourth proportional to 13,496.60, 20,255.16 and 4,738.88 is: 7,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,496.60 : 20,255.16 = 4,738.88 : x
  2. Step 2: Convert to fraction form
    13,496.60/20,255.16 = 4,738.88/x
  3. Step 3: Cross multiply
    13,496.60x = 20,255.16 × 4,738.88
  4. Step 4: Simplify right side
    13,496.60x = 95,986,772.62
  5. Step 5: Solve for x
    x = 95,986,772.62/13,496.60
  6. Step 6: Final answer
    x = 7,111.92

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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.