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Finding the Fourth Proportional to 19,603.01, 27,046.19 and 11,103.78

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Solution

The fourth proportional to 19,603.01, 27,046.19 and 11,103.78 is: 15,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.01 : 27,046.19 = 11,103.78 : x
  2. Step 2: Convert to fraction form
    19,603.01/27,046.19 = 11,103.78/x
  3. Step 3: Cross multiply
    19,603.01x = 27,046.19 × 11,103.78
  4. Step 4: Simplify right side
    19,603.01x = 300,314,971.36
  5. Step 5: Solve for x
    x = 300,314,971.36/19,603.01
  6. Step 6: Final answer
    x = 15,319.84

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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.