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Finding the Fourth Proportional to 18,704.52, 25,814.70 and 13,035.60

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Solution

The fourth proportional to 18,704.52, 25,814.70 and 13,035.60 is: 17,990.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.52 : 25,814.70 = 13,035.60 : x
  2. Step 2: Convert to fraction form
    18,704.52/25,814.70 = 13,035.60/x
  3. Step 3: Cross multiply
    18,704.52x = 25,814.70 × 13,035.60
  4. Step 4: Simplify right side
    18,704.52x = 336,510,103.32
  5. Step 5: Solve for x
    x = 336,510,103.32/18,704.52
  6. Step 6: Final answer
    x = 17,990.84

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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.