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Finding the Fourth Proportional to 79,716.71, 119,591.93 and 26,405.67

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Solution

The fourth proportional to 79,716.71, 119,591.93 and 26,405.67 is: 39,614.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,716.71 : 119,591.93 = 26,405.67 : x
  2. Step 2: Convert to fraction form
    79,716.71/119,591.93 = 26,405.67/x
  3. Step 3: Cross multiply
    79,716.71x = 119,591.93 × 26,405.67
  4. Step 4: Simplify right side
    79,716.71x = 3,157,904,457.75
  5. Step 5: Solve for x
    x = 3,157,904,457.75/79,716.71
  6. Step 6: Final answer
    x = 39,614.09

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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.