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Finding the Fourth Proportional to 18,173.19, 25,083.09 and 11,103.66

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Solution

The fourth proportional to 18,173.19, 25,083.09 and 11,103.66 is: 15,325.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,173.19 : 25,083.09 = 11,103.66 : x
  2. Step 2: Convert to fraction form
    18,173.19/25,083.09 = 11,103.66/x
  3. Step 3: Cross multiply
    18,173.19x = 25,083.09 × 11,103.66
  4. Step 4: Simplify right side
    18,173.19x = 278,514,103.11
  5. Step 5: Solve for x
    x = 278,514,103.11/18,173.19
  6. Step 6: Final answer
    x = 15,325.55

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Half scale
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Double scale
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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.