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Finding the Fourth Proportional to 26,299.50, 39,468.69 and 12,448.50

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Solution

The fourth proportional to 26,299.50, 39,468.69 and 12,448.50 is: 18,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,299.50 : 39,468.69 = 12,448.50 : x
  2. Step 2: Convert to fraction form
    26,299.50/39,468.69 = 12,448.50/x
  3. Step 3: Cross multiply
    26,299.50x = 39,468.69 × 12,448.50
  4. Step 4: Simplify right side
    26,299.50x = 491,325,987.47
  5. Step 5: Solve for x
    x = 491,325,987.47/26,299.50
  6. Step 6: Final answer
    x = 18,681.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.