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Finding the Fourth Proportional to 18,773.64, 25,899.84 and 12,057.84

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Solution

The fourth proportional to 18,773.64, 25,899.84 and 12,057.84 is: 16,634.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.64 : 25,899.84 = 12,057.84 : x
  2. Step 2: Convert to fraction form
    18,773.64/25,899.84 = 12,057.84/x
  3. Step 3: Cross multiply
    18,773.64x = 25,899.84 × 12,057.84
  4. Step 4: Simplify right side
    18,773.64x = 312,296,126.75
  5. Step 5: Solve for x
    x = 312,296,126.75/18,773.64
  6. Step 6: Final answer
    x = 16,634.82

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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.