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Finding the Fourth Proportional to 19,603.42, 27,042.41 and 11,949.07

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Solution

The fourth proportional to 19,603.42, 27,042.41 and 11,949.07 is: 16,483.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.42 : 27,042.41 = 11,949.07 : x
  2. Step 2: Convert to fraction form
    19,603.42/27,042.41 = 11,949.07/x
  3. Step 3: Cross multiply
    19,603.42x = 27,042.41 × 11,949.07
  4. Step 4: Simplify right side
    19,603.42x = 323,131,595.82
  5. Step 5: Solve for x
    x = 323,131,595.82/19,603.42
  6. Step 6: Final answer
    x = 16,483.43

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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.