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Finding the Fourth Proportional to 17,164.54, 25,745.53 and 5,318.40

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Solution

The fourth proportional to 17,164.54, 25,745.53 and 5,318.40 is: 7,977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,164.54 : 25,745.53 = 5,318.40 : x
  2. Step 2: Convert to fraction form
    17,164.54/25,745.53 = 5,318.40/x
  3. Step 3: Cross multiply
    17,164.54x = 25,745.53 × 5,318.40
  4. Step 4: Simplify right side
    17,164.54x = 136,925,115.22
  5. Step 5: Solve for x
    x = 136,925,115.22/17,164.54
  6. Step 6: Final answer
    x = 7,977.21

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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.