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Finding the Fourth Proportional to 172,922.40, 259,205.28 and 125,418.48

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Solution

The fourth proportional to 172,922.40, 259,205.28 and 125,418.48 is: 187,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,922.40 : 259,205.28 = 125,418.48 : x
  2. Step 2: Convert to fraction form
    172,922.40/259,205.28 = 125,418.48/x
  3. Step 3: Cross multiply
    172,922.40x = 259,205.28 × 125,418.48
  4. Step 4: Simplify right side
    172,922.40x = 32,509,132,225.57
  5. Step 5: Solve for x
    x = 32,509,132,225.57/172,922.40
  6. Step 6: Final answer
    x = 187,998.39

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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.