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Finding the Fourth Proportional to 79,397.45, 119,005.57 and 31,982.17

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Solution

The fourth proportional to 79,397.45, 119,005.57 and 31,982.17 is: 47,936.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,397.45 : 119,005.57 = 31,982.17 : x
  2. Step 2: Convert to fraction form
    79,397.45/119,005.57 = 31,982.17/x
  3. Step 3: Cross multiply
    79,397.45x = 119,005.57 × 31,982.17
  4. Step 4: Simplify right side
    79,397.45x = 3,806,056,210.78
  5. Step 5: Solve for x
    x = 3,806,056,210.78/79,397.45
  6. Step 6: Final answer
    x = 47,936.76

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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.