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Finding the Fourth Proportional to 17,218.55, 25,837.81 and 7,222.41

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Solution

The fourth proportional to 17,218.55, 25,837.81 and 7,222.41 is: 10,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,218.55 : 25,837.81 = 7,222.41 : x
  2. Step 2: Convert to fraction form
    17,218.55/25,837.81 = 7,222.41/x
  3. Step 3: Cross multiply
    17,218.55x = 25,837.81 × 7,222.41
  4. Step 4: Simplify right side
    17,218.55x = 186,611,239.27
  5. Step 5: Solve for x
    x = 186,611,239.27/17,218.55
  6. Step 6: Final answer
    x = 10,837.80

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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.