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Finding the Fourth Proportional to 18,601.98, 25,670.16 and 10,103.70

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Solution

The fourth proportional to 18,601.98, 25,670.16 and 10,103.70 is: 13,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.98 : 25,670.16 = 10,103.70 : x
  2. Step 2: Convert to fraction form
    18,601.98/25,670.16 = 10,103.70/x
  3. Step 3: Cross multiply
    18,601.98x = 25,670.16 × 10,103.70
  4. Step 4: Simplify right side
    18,601.98x = 259,363,595.59
  5. Step 5: Solve for x
    x = 259,363,595.59/18,601.98
  6. Step 6: Final answer
    x = 13,942.80

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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.