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Finding the Fourth Proportional to 17,143.60, 25,725.08 and 6,762.64

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Solution

The fourth proportional to 17,143.60, 25,725.08 and 6,762.64 is: 10,147.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,143.60 : 25,725.08 = 6,762.64 : x
  2. Step 2: Convert to fraction form
    17,143.60/25,725.08 = 6,762.64/x
  3. Step 3: Cross multiply
    17,143.60x = 25,725.08 × 6,762.64
  4. Step 4: Simplify right side
    17,143.60x = 173,969,455.01
  5. Step 5: Solve for x
    x = 173,969,455.01/17,143.60
  6. Step 6: Final answer
    x = 10,147.78

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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.