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Finding the Fourth Proportional to 17,422.60, 26,133.90 and 4,274.80

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Solution

The fourth proportional to 17,422.60, 26,133.90 and 4,274.80 is: 6,412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,422.60 : 26,133.90 = 4,274.80 : x
  2. Step 2: Convert to fraction form
    17,422.60/26,133.90 = 4,274.80/x
  3. Step 3: Cross multiply
    17,422.60x = 26,133.90 × 4,274.80
  4. Step 4: Simplify right side
    17,422.60x = 111,717,195.72
  5. Step 5: Solve for x
    x = 111,717,195.72/17,422.60
  6. Step 6: Final answer
    x = 6,412.20

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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.