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Finding the Fourth Proportional to 19,603.62, 27,049.95 and 11,645.64

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Solution

The fourth proportional to 19,603.62, 27,049.95 and 11,645.64 is: 16,069.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.62 : 27,049.95 = 11,645.64 : x
  2. Step 2: Convert to fraction form
    19,603.62/27,049.95 = 11,645.64/x
  3. Step 3: Cross multiply
    19,603.62x = 27,049.95 × 11,645.64
  4. Step 4: Simplify right side
    19,603.62x = 315,013,979.72
  5. Step 5: Solve for x
    x = 315,013,979.72/19,603.62
  6. Step 6: Final answer
    x = 16,069.17

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1.5x scale

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.