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Finding the Fourth Proportional to 18,770.61, 25,902.57 and 10,813.98

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Solution

The fourth proportional to 18,770.61, 25,902.57 and 10,813.98 is: 14,922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.61 : 25,902.57 = 10,813.98 : x
  2. Step 2: Convert to fraction form
    18,770.61/25,902.57 = 10,813.98/x
  3. Step 3: Cross multiply
    18,770.61x = 25,902.57 × 10,813.98
  4. Step 4: Simplify right side
    18,770.61x = 280,109,873.93
  5. Step 5: Solve for x
    x = 280,109,873.93/18,770.61
  6. Step 6: Final answer
    x = 14,922.79

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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.