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Finding the Fourth Proportional to 79,933.69, 110,350.79 and 51,655.51

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Solution

The fourth proportional to 79,933.69, 110,350.79 and 51,655.51 is: 71,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,933.69 : 110,350.79 = 51,655.51 : x
  2. Step 2: Convert to fraction form
    79,933.69/110,350.79 = 51,655.51/x
  3. Step 3: Cross multiply
    79,933.69x = 110,350.79 × 51,655.51
  4. Step 4: Simplify right side
    79,933.69x = 5,700,226,336.35
  5. Step 5: Solve for x
    x = 5,700,226,336.35/79,933.69
  6. Step 6: Final answer
    x = 71,311.94

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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.