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Finding the Fourth Proportional to 13,476.60, 20,215.80 and 4,591.80

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Solution

The fourth proportional to 13,476.60, 20,215.80 and 4,591.80 is: 6,888.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476.60 : 20,215.80 = 4,591.80 : x
  2. Step 2: Convert to fraction form
    13,476.60/20,215.80 = 4,591.80/x
  3. Step 3: Cross multiply
    13,476.60x = 20,215.80 × 4,591.80
  4. Step 4: Simplify right side
    13,476.60x = 92,826,910.44
  5. Step 5: Solve for x
    x = 92,826,910.44/13,476.60
  6. Step 6: Final answer
    x = 6,888.01

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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.