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Finding the Fourth Proportional to 18,554.80, 25,604.78 and 10,171.12

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Solution

The fourth proportional to 18,554.80, 25,604.78 and 10,171.12 is: 14,035.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,554.80 : 25,604.78 = 10,171.12 : x
  2. Step 2: Convert to fraction form
    18,554.80/25,604.78 = 10,171.12/x
  3. Step 3: Cross multiply
    18,554.80x = 25,604.78 × 10,171.12
  4. Step 4: Simplify right side
    18,554.80x = 260,429,289.95
  5. Step 5: Solve for x
    x = 260,429,289.95/18,554.80
  6. Step 6: Final answer
    x = 14,035.68

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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.