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Finding the Fourth Proportional to 71,847.70, 99,180.36 and 51,164.62

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Solution

The fourth proportional to 71,847.70, 99,180.36 and 51,164.62 is: 70,628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,847.70 : 99,180.36 = 51,164.62 : x
  2. Step 2: Convert to fraction form
    71,847.70/99,180.36 = 51,164.62/x
  3. Step 3: Cross multiply
    71,847.70x = 99,180.36 × 51,164.62
  4. Step 4: Simplify right side
    71,847.70x = 5,074,525,182.91
  5. Step 5: Solve for x
    x = 5,074,525,182.91/71,847.70
  6. Step 6: Final answer
    x = 70,628.92

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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.