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Finding the Fourth Proportional to 66,462.70, 99,694.05 and 50,716.30

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Solution

The fourth proportional to 66,462.70, 99,694.05 and 50,716.30 is: 76,074.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,462.70 : 99,694.05 = 50,716.30 : x
  2. Step 2: Convert to fraction form
    66,462.70/99,694.05 = 50,716.30/x
  3. Step 3: Cross multiply
    66,462.70x = 99,694.05 × 50,716.30
  4. Step 4: Simplify right side
    66,462.70x = 5,056,113,348.02
  5. Step 5: Solve for x
    x = 5,056,113,348.02/66,462.70
  6. Step 6: Final answer
    x = 76,074.45

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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.