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Finding the Fourth Proportional to 18,603.96, 27,906.16 and 5,456.60

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Solution

The fourth proportional to 18,603.96, 27,906.16 and 5,456.60 is: 8,184.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.96 : 27,906.16 = 5,456.60 : x
  2. Step 2: Convert to fraction form
    18,603.96/27,906.16 = 5,456.60/x
  3. Step 3: Cross multiply
    18,603.96x = 27,906.16 × 5,456.60
  4. Step 4: Simplify right side
    18,603.96x = 152,272,613.13
  5. Step 5: Solve for x
    x = 152,272,613.13/18,603.96
  6. Step 6: Final answer
    x = 8,184.96

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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.