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Finding the Fourth Proportional to 18,169.76, 25,074.06 and 10,103.42

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Solution

The fourth proportional to 18,169.76, 25,074.06 and 10,103.42 is: 13,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,169.76 : 25,074.06 = 10,103.42 : x
  2. Step 2: Convert to fraction form
    18,169.76/25,074.06 = 10,103.42/x
  3. Step 3: Cross multiply
    18,169.76x = 25,074.06 × 10,103.42
  4. Step 4: Simplify right side
    18,169.76x = 253,333,759.29
  5. Step 5: Solve for x
    x = 253,333,759.29/18,169.76
  6. Step 6: Final answer
    x = 13,942.60

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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.