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Finding the Fourth Proportional to 16,919.69, 25,394.11 and 11,729.21

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Solution

The fourth proportional to 16,919.69, 25,394.11 and 11,729.21 is: 17,603.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,919.69 : 25,394.11 = 11,729.21 : x
  2. Step 2: Convert to fraction form
    16,919.69/25,394.11 = 11,729.21/x
  3. Step 3: Cross multiply
    16,919.69x = 25,394.11 × 11,729.21
  4. Step 4: Simplify right side
    16,919.69x = 297,852,692.66
  5. Step 5: Solve for x
    x = 297,852,692.66/16,919.69
  6. Step 6: Final answer
    x = 17,603.91

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1.5x scale

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.