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Finding the Fourth Proportional to 79,651.14, 109,917.24 and 43,840.42

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Solution

The fourth proportional to 79,651.14, 109,917.24 and 43,840.42 is: 60,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,651.14 : 109,917.24 = 43,840.42 : x
  2. Step 2: Convert to fraction form
    79,651.14/109,917.24 = 43,840.42/x
  3. Step 3: Cross multiply
    79,651.14x = 109,917.24 × 43,840.42
  4. Step 4: Simplify right side
    79,651.14x = 4,818,817,966.84
  5. Step 5: Solve for x
    x = 4,818,817,966.84/79,651.14
  6. Step 6: Final answer
    x = 60,499.05

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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.