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Finding the Fourth Proportional to 79,466.56, 119,228.91 and 74,771.80

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Solution

The fourth proportional to 79,466.56, 119,228.91 and 74,771.80 is: 112,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,466.56 : 119,228.91 = 74,771.80 : x
  2. Step 2: Convert to fraction form
    79,466.56/119,228.91 = 74,771.80/x
  3. Step 3: Cross multiply
    79,466.56x = 119,228.91 × 74,771.80
  4. Step 4: Simplify right side
    79,466.56x = 8,914,960,212.74
  5. Step 5: Solve for x
    x = 8,914,960,212.74/79,466.56
  6. Step 6: Final answer
    x = 112,185.05

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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.