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Finding the Fourth Proportional to 18,701.84, 25,809.71 and 10,635.96

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Solution

The fourth proportional to 18,701.84, 25,809.71 and 10,635.96 is: 14,678.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.84 : 25,809.71 = 10,635.96 : x
  2. Step 2: Convert to fraction form
    18,701.84/25,809.71 = 10,635.96/x
  3. Step 3: Cross multiply
    18,701.84x = 25,809.71 × 10,635.96
  4. Step 4: Simplify right side
    18,701.84x = 274,511,086.78
  5. Step 5: Solve for x
    x = 274,511,086.78/18,701.84
  6. Step 6: Final answer
    x = 14,678.29

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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.