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Finding the Fourth Proportional to 18,834.40, 25,995.03 and 12,461.11

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Solution

The fourth proportional to 18,834.40, 25,995.03 and 12,461.11 is: 17,198.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.40 : 25,995.03 = 12,461.11 : x
  2. Step 2: Convert to fraction form
    18,834.40/25,995.03 = 12,461.11/x
  3. Step 3: Cross multiply
    18,834.40x = 25,995.03 × 12,461.11
  4. Step 4: Simplify right side
    18,834.40x = 323,926,928.28
  5. Step 5: Solve for x
    x = 323,926,928.28/18,834.40
  6. Step 6: Final answer
    x = 17,198.69

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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.