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Finding the Fourth Proportional to 92,155.95, 138,252.39 and 28,991.97

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Solution

The fourth proportional to 92,155.95, 138,252.39 and 28,991.97 is: 43,493.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,155.95 : 138,252.39 = 28,991.97 : x
  2. Step 2: Convert to fraction form
    92,155.95/138,252.39 = 28,991.97/x
  3. Step 3: Cross multiply
    92,155.95x = 138,252.39 × 28,991.97
  4. Step 4: Simplify right side
    92,155.95x = 4,008,208,998.35
  5. Step 5: Solve for x
    x = 4,008,208,998.35/92,155.95
  6. Step 6: Final answer
    x = 43,493.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.