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Finding the Fourth Proportional to 108,390.94, 149,578.38 and 59,992.98

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Solution

The fourth proportional to 108,390.94, 149,578.38 and 59,992.98 is: 82,789.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,390.94 : 149,578.38 = 59,992.98 : x
  2. Step 2: Convert to fraction form
    108,390.94/149,578.38 = 59,992.98/x
  3. Step 3: Cross multiply
    108,390.94x = 149,578.38 × 59,992.98
  4. Step 4: Simplify right side
    108,390.94x = 8,973,652,759.77
  5. Step 5: Solve for x
    x = 8,973,652,759.77/108,390.94
  6. Step 6: Final answer
    x = 82,789.69

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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.