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Finding the Fourth Proportional to 79,666.41, 109,942.77 and 43,859.75

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Solution

The fourth proportional to 79,666.41, 109,942.77 and 43,859.75 is: 60,528.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,666.41 : 109,942.77 = 43,859.75 : x
  2. Step 2: Convert to fraction form
    79,666.41/109,942.77 = 43,859.75/x
  3. Step 3: Cross multiply
    79,666.41x = 109,942.77 × 43,859.75
  4. Step 4: Simplify right side
    79,666.41x = 4,822,062,406.51
  5. Step 5: Solve for x
    x = 4,822,062,406.51/79,666.41
  6. Step 6: Final answer
    x = 60,528.18

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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.