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Finding the Fourth Proportional to 18,636.71, 25,705.22 and 10,676.03

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Solution

The fourth proportional to 18,636.71, 25,705.22 and 10,676.03 is: 14,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.71 : 25,705.22 = 10,676.03 : x
  2. Step 2: Convert to fraction form
    18,636.71/25,705.22 = 10,676.03/x
  3. Step 3: Cross multiply
    18,636.71x = 25,705.22 × 10,676.03
  4. Step 4: Simplify right side
    18,636.71x = 274,429,517.97
  5. Step 5: Solve for x
    x = 274,429,517.97/18,636.71
  6. Step 6: Final answer
    x = 14,725.22

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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.