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Finding the Fourth Proportional to 18,603.56, 27,904.97 and 5,455.64

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Solution

The fourth proportional to 18,603.56, 27,904.97 and 5,455.64 is: 8,183.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.56 : 27,904.97 = 5,455.64 : x
  2. Step 2: Convert to fraction form
    18,603.56/27,904.97 = 5,455.64/x
  3. Step 3: Cross multiply
    18,603.56x = 27,904.97 × 5,455.64
  4. Step 4: Simplify right side
    18,603.56x = 152,239,303.73
  5. Step 5: Solve for x
    x = 152,239,303.73/18,603.56
  6. Step 6: Final answer
    x = 8,183.34

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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.