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Finding the Fourth Proportional to 79,813.58, 110,213.93 and 76,032.50

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Solution

The fourth proportional to 79,813.58, 110,213.93 and 76,032.50 is: 104,992.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,813.58 : 110,213.93 = 76,032.50 : x
  2. Step 2: Convert to fraction form
    79,813.58/110,213.93 = 76,032.50/x
  3. Step 3: Cross multiply
    79,813.58x = 110,213.93 × 76,032.50
  4. Step 4: Simplify right side
    79,813.58x = 8,379,840,271.74
  5. Step 5: Solve for x
    x = 8,379,840,271.74/79,813.58
  6. Step 6: Final answer
    x = 104,992.67

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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.