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Finding the Fourth Proportional to 108,603.94, 149,881.85 and 60,861.73

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Solution

The fourth proportional to 108,603.94, 149,881.85 and 60,861.73 is: 83,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,603.94 : 149,881.85 = 60,861.73 : x
  2. Step 2: Convert to fraction form
    108,603.94/149,881.85 = 60,861.73/x
  3. Step 3: Cross multiply
    108,603.94x = 149,881.85 × 60,861.73
  4. Step 4: Simplify right side
    108,603.94x = 9,122,068,686.60
  5. Step 5: Solve for x
    x = 9,122,068,686.60/108,603.94
  6. Step 6: Final answer
    x = 83,993.90

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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.