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Finding the Fourth Proportional to 17,405.98, 26,087.54 and 6,865.42

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Solution

The fourth proportional to 17,405.98, 26,087.54 and 6,865.42 is: 10,289.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,405.98 : 26,087.54 = 6,865.42 : x
  2. Step 2: Convert to fraction form
    17,405.98/26,087.54 = 6,865.42/x
  3. Step 3: Cross multiply
    17,405.98x = 26,087.54 × 6,865.42
  4. Step 4: Simplify right side
    17,405.98x = 179,101,918.87
  5. Step 5: Solve for x
    x = 179,101,918.87/17,405.98
  6. Step 6: Final answer
    x = 10,289.68

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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.