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Finding the Fourth Proportional to 76,474.10, 114,599.10 and 68,576.60

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Solution

The fourth proportional to 76,474.10, 114,599.10 and 68,576.60 is: 102,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,474.10 : 114,599.10 = 68,576.60 : x
  2. Step 2: Convert to fraction form
    76,474.10/114,599.10 = 68,576.60/x
  3. Step 3: Cross multiply
    76,474.10x = 114,599.10 × 68,576.60
  4. Step 4: Simplify right side
    76,474.10x = 7,858,816,641.06
  5. Step 5: Solve for x
    x = 7,858,816,641.06/76,474.10
  6. Step 6: Final answer
    x = 102,764.42

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1.5x scale

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.