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Finding the Fourth Proportional to 17,672.40, 26,470.20 and 11,451.60

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Solution

The fourth proportional to 17,672.40, 26,470.20 and 11,451.60 is: 17,152.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,672.40 : 26,470.20 = 11,451.60 : x
  2. Step 2: Convert to fraction form
    17,672.40/26,470.20 = 11,451.60/x
  3. Step 3: Cross multiply
    17,672.40x = 26,470.20 × 11,451.60
  4. Step 4: Simplify right side
    17,672.40x = 303,126,142.32
  5. Step 5: Solve for x
    x = 303,126,142.32/17,672.40
  6. Step 6: Final answer
    x = 17,152.52

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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.