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Finding the Fourth Proportional to 71,320.76, 98,505.96 and 57,029.96

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Solution

The fourth proportional to 71,320.76, 98,505.96 and 57,029.96 is: 78,767.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,320.76 : 98,505.96 = 57,029.96 : x
  2. Step 2: Convert to fraction form
    71,320.76/98,505.96 = 57,029.96/x
  3. Step 3: Cross multiply
    71,320.76x = 98,505.96 × 57,029.96
  4. Step 4: Simplify right side
    71,320.76x = 5,617,790,958.56
  5. Step 5: Solve for x
    x = 5,617,790,958.56/71,320.76
  6. Step 6: Final answer
    x = 78,767.96

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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.