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Finding the Fourth Proportional to 79,371.60, 109,529.29 and 43,561.68

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Solution

The fourth proportional to 79,371.60, 109,529.29 and 43,561.68 is: 60,113.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,371.60 : 109,529.29 = 43,561.68 : x
  2. Step 2: Convert to fraction form
    79,371.60/109,529.29 = 43,561.68/x
  3. Step 3: Cross multiply
    79,371.60x = 109,529.29 × 43,561.68
  4. Step 4: Simplify right side
    79,371.60x = 4,771,279,116.15
  5. Step 5: Solve for x
    x = 4,771,279,116.15/79,371.60
  6. Step 6: Final answer
    x = 60,113.18

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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.