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Finding the Fourth Proportional to 108,677.64, 149,974.74 and 60,930.96

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Solution

The fourth proportional to 108,677.64, 149,974.74 and 60,930.96 is: 84,084.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,677.64 : 149,974.74 = 60,930.96 : x
  2. Step 2: Convert to fraction form
    108,677.64/149,974.74 = 60,930.96/x
  3. Step 3: Cross multiply
    108,677.64x = 149,974.74 × 60,930.96
  4. Step 4: Simplify right side
    108,677.64x = 9,138,104,883.95
  5. Step 5: Solve for x
    x = 9,138,104,883.95/108,677.64
  6. Step 6: Final answer
    x = 84,084.50

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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.