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Finding the Fourth Proportional to 18,770.84, 25,902.28 and 10,813.70

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Solution

The fourth proportional to 18,770.84, 25,902.28 and 10,813.70 is: 14,922.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.84 : 25,902.28 = 10,813.70 : x
  2. Step 2: Convert to fraction form
    18,770.84/25,902.28 = 10,813.70/x
  3. Step 3: Cross multiply
    18,770.84x = 25,902.28 × 10,813.70
  4. Step 4: Simplify right side
    18,770.84x = 280,099,563.51
  5. Step 5: Solve for x
    x = 280,099,563.51/18,770.84
  6. Step 6: Final answer
    x = 14,922.06

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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.