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Finding the Fourth Proportional to 14,651.16, 20,204.20 and 13,436.96

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Solution

The fourth proportional to 14,651.16, 20,204.20 and 13,436.96 is: 18,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.16 : 20,204.20 = 13,436.96 : x
  2. Step 2: Convert to fraction form
    14,651.16/20,204.20 = 13,436.96/x
  3. Step 3: Cross multiply
    14,651.16x = 20,204.20 × 13,436.96
  4. Step 4: Simplify right side
    14,651.16x = 271,483,027.23
  5. Step 5: Solve for x
    x = 271,483,027.23/14,651.16
  6. Step 6: Final answer
    x = 18,529.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.