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Finding the Fourth Proportional to 79,432.99, 109,618.31 and 43,623.76

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Solution

The fourth proportional to 79,432.99, 109,618.31 and 43,623.76 is: 60,201.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,432.99 : 109,618.31 = 43,623.76 : x
  2. Step 2: Convert to fraction form
    79,432.99/109,618.31 = 43,623.76/x
  3. Step 3: Cross multiply
    79,432.99x = 109,618.31 × 43,623.76
  4. Step 4: Simplify right side
    79,432.99x = 4,781,962,847.05
  5. Step 5: Solve for x
    x = 4,781,962,847.05/79,432.99
  6. Step 6: Final answer
    x = 60,201.22

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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.