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Finding the Fourth Proportional to 79,910.56, 119,828.76 and 46,640.24

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Solution

The fourth proportional to 79,910.56, 119,828.76 and 46,640.24 is: 69,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,910.56 : 119,828.76 = 46,640.24 : x
  2. Step 2: Convert to fraction form
    79,910.56/119,828.76 = 46,640.24/x
  3. Step 3: Cross multiply
    79,910.56x = 119,828.76 × 46,640.24
  4. Step 4: Simplify right side
    79,910.56x = 5,588,842,125.30
  5. Step 5: Solve for x
    x = 5,588,842,125.30/79,910.56
  6. Step 6: Final answer
    x = 69,938.72

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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.