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Finding the Fourth Proportional to 79,771.98, 119,685.53 and 35,429.79

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Solution

The fourth proportional to 79,771.98, 119,685.53 and 35,429.79 is: 53,156.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,771.98 : 119,685.53 = 35,429.79 : x
  2. Step 2: Convert to fraction form
    79,771.98/119,685.53 = 35,429.79/x
  3. Step 3: Cross multiply
    79,771.98x = 119,685.53 × 35,429.79
  4. Step 4: Simplify right side
    79,771.98x = 4,240,433,193.94
  5. Step 5: Solve for x
    x = 4,240,433,193.94/79,771.98
  6. Step 6: Final answer
    x = 53,156.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.