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Finding the Fourth Proportional to 134,906.88, 186,161.88 and 74,467.80

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Solution

The fourth proportional to 134,906.88, 186,161.88 and 74,467.80 is: 102,760.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,906.88 : 186,161.88 = 74,467.80 : x
  2. Step 2: Convert to fraction form
    134,906.88/186,161.88 = 74,467.80/x
  3. Step 3: Cross multiply
    134,906.88x = 186,161.88 × 74,467.80
  4. Step 4: Simplify right side
    134,906.88x = 13,863,065,647.46
  5. Step 5: Solve for x
    x = 13,863,065,647.46/134,906.88
  6. Step 6: Final answer
    x = 102,760.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.