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Finding the Fourth Proportional to 70,997.69, 97,976.82 and 39,166.67

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Solution

The fourth proportional to 70,997.69, 97,976.82 and 39,166.67 is: 54,050.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,997.69 : 97,976.82 = 39,166.67 : x
  2. Step 2: Convert to fraction form
    70,997.69/97,976.82 = 39,166.67/x
  3. Step 3: Cross multiply
    70,997.69x = 97,976.82 × 39,166.67
  4. Step 4: Simplify right side
    70,997.69x = 3,837,425,286.71
  5. Step 5: Solve for x
    x = 3,837,425,286.71/70,997.69
  6. Step 6: Final answer
    x = 54,050.01

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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.