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Finding the Fourth Proportional to 13,480.60, 20,221.80 and 4,595.80

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Solution

The fourth proportional to 13,480.60, 20,221.80 and 4,595.80 is: 6,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.60 : 20,221.80 = 4,595.80 : x
  2. Step 2: Convert to fraction form
    13,480.60/20,221.80 = 4,595.80/x
  3. Step 3: Cross multiply
    13,480.60x = 20,221.80 × 4,595.80
  4. Step 4: Simplify right side
    13,480.60x = 92,935,348.44
  5. Step 5: Solve for x
    x = 92,935,348.44/13,480.60
  6. Step 6: Final answer
    x = 6,894.01

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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.