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Finding the Fourth Proportional to 108,492.98, 149,620.41 and 74,441.39

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Solution

The fourth proportional to 108,492.98, 149,620.41 and 74,441.39 is: 102,660.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,492.98 : 149,620.41 = 74,441.39 : x
  2. Step 2: Convert to fraction form
    108,492.98/149,620.41 = 74,441.39/x
  3. Step 3: Cross multiply
    108,492.98x = 149,620.41 × 74,441.39
  4. Step 4: Simplify right side
    108,492.98x = 11,137,950,544.67
  5. Step 5: Solve for x
    x = 11,137,950,544.67/108,492.98
  6. Step 6: Final answer
    x = 102,660.57

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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.