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Finding the Fourth Proportional to 18,735.36, 25,857.36 and 10,777.44

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Solution

The fourth proportional to 18,735.36, 25,857.36 and 10,777.44 is: 14,874.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.36 : 25,857.36 = 10,777.44 : x
  2. Step 2: Convert to fraction form
    18,735.36/25,857.36 = 10,777.44/x
  3. Step 3: Cross multiply
    18,735.36x = 25,857.36 × 10,777.44
  4. Step 4: Simplify right side
    18,735.36x = 278,676,145.96
  5. Step 5: Solve for x
    x = 278,676,145.96/18,735.36
  6. Step 6: Final answer
    x = 14,874.34

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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.