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Finding the Fourth Proportional to 79,296.96, 118,991.88 and 31,904.67

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Solution

The fourth proportional to 79,296.96, 118,991.88 and 31,904.67 is: 47,875.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,296.96 : 118,991.88 = 31,904.67 : x
  2. Step 2: Convert to fraction form
    79,296.96/118,991.88 = 31,904.67/x
  3. Step 3: Cross multiply
    79,296.96x = 118,991.88 × 31,904.67
  4. Step 4: Simplify right side
    79,296.96x = 3,796,396,664.08
  5. Step 5: Solve for x
    x = 3,796,396,664.08/79,296.96
  6. Step 6: Final answer
    x = 47,875.69

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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.