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Finding the Fourth Proportional to 82,986.86, 114,245.03 and 79,173.92

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Solution

The fourth proportional to 82,986.86, 114,245.03 and 79,173.92 is: 108,995.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,986.86 : 114,245.03 = 79,173.92 : x
  2. Step 2: Convert to fraction form
    82,986.86/114,245.03 = 79,173.92/x
  3. Step 3: Cross multiply
    82,986.86x = 114,245.03 × 79,173.92
  4. Step 4: Simplify right side
    82,986.86x = 9,045,227,349.16
  5. Step 5: Solve for x
    x = 9,045,227,349.16/82,986.86
  6. Step 6: Final answer
    x = 108,995.89

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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.