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Finding the Fourth Proportional to 28,167.60, 42,203.94 and 17,040.44

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Solution

The fourth proportional to 28,167.60, 42,203.94 and 17,040.44 is: 25,531.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.60 : 42,203.94 = 17,040.44 : x
  2. Step 2: Convert to fraction form
    28,167.60/42,203.94 = 17,040.44/x
  3. Step 3: Cross multiply
    28,167.60x = 42,203.94 × 17,040.44
  4. Step 4: Simplify right side
    28,167.60x = 719,173,707.33
  5. Step 5: Solve for x
    x = 719,173,707.33/28,167.60
  6. Step 6: Final answer
    x = 25,531.95

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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.