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Finding the Fourth Proportional to 117,589.82, 162,211.80 and 74,493.32

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Solution

The fourth proportional to 117,589.82, 162,211.80 and 74,493.32 is: 102,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,589.82 : 162,211.80 = 74,493.32 : x
  2. Step 2: Convert to fraction form
    117,589.82/162,211.80 = 74,493.32/x
  3. Step 3: Cross multiply
    117,589.82x = 162,211.80 × 74,493.32
  4. Step 4: Simplify right side
    117,589.82x = 12,083,695,525.18
  5. Step 5: Solve for x
    x = 12,083,695,525.18/117,589.82
  6. Step 6: Final answer
    x = 102,761.41

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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.