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Finding the Fourth Proportional to 18,759.62, 25,900.08 and 12,047.96

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Solution

The fourth proportional to 18,759.62, 25,900.08 and 12,047.96 is: 16,633.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.62 : 25,900.08 = 12,047.96 : x
  2. Step 2: Convert to fraction form
    18,759.62/25,900.08 = 12,047.96/x
  3. Step 3: Cross multiply
    18,759.62x = 25,900.08 × 12,047.96
  4. Step 4: Simplify right side
    18,759.62x = 312,043,127.84
  5. Step 5: Solve for x
    x = 312,043,127.84/18,759.62
  6. Step 6: Final answer
    x = 16,633.77

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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.