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Finding the Fourth Proportional to 18,804.49, 25,961.99 and 12,101.76

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Solution

The fourth proportional to 18,804.49, 25,961.99 and 12,101.76 is: 16,708.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.49 : 25,961.99 = 12,101.76 : x
  2. Step 2: Convert to fraction form
    18,804.49/25,961.99 = 12,101.76/x
  3. Step 3: Cross multiply
    18,804.49x = 25,961.99 × 12,101.76
  4. Step 4: Simplify right side
    18,804.49x = 314,185,772.10
  5. Step 5: Solve for x
    x = 314,185,772.10/18,804.49
  6. Step 6: Final answer
    x = 16,708.02

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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.