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Finding the Fourth Proportional to 17,625.44, 26,386.21 and 15,438.44

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Solution

The fourth proportional to 17,625.44, 26,386.21 and 15,438.44 is: 23,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,625.44 : 26,386.21 = 15,438.44 : x
  2. Step 2: Convert to fraction form
    17,625.44/26,386.21 = 15,438.44/x
  3. Step 3: Cross multiply
    17,625.44x = 26,386.21 × 15,438.44
  4. Step 4: Simplify right side
    17,625.44x = 407,361,710.79
  5. Step 5: Solve for x
    x = 407,361,710.79/17,625.44
  6. Step 6: Final answer
    x = 23,112.15

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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.