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Finding the Fourth Proportional to 79,661.80, 119,501.34 and 29,765.80

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Solution

The fourth proportional to 79,661.80, 119,501.34 and 29,765.80 is: 44,651.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661.80 : 119,501.34 = 29,765.80 : x
  2. Step 2: Convert to fraction form
    79,661.80/119,501.34 = 29,765.80/x
  3. Step 3: Cross multiply
    79,661.80x = 119,501.34 × 29,765.80
  4. Step 4: Simplify right side
    79,661.80x = 3,557,052,986.17
  5. Step 5: Solve for x
    x = 3,557,052,986.17/79,661.80
  6. Step 6: Final answer
    x = 44,651.93

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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.