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Finding the Fourth Proportional to 81,609.92, 122,449.44 and 44,630.72

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Solution

The fourth proportional to 81,609.92, 122,449.44 and 44,630.72 is: 66,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,609.92 : 122,449.44 = 44,630.72 : x
  2. Step 2: Convert to fraction form
    81,609.92/122,449.44 = 44,630.72/x
  3. Step 3: Cross multiply
    81,609.92x = 122,449.44 × 44,630.72
  4. Step 4: Simplify right side
    81,609.92x = 5,465,006,670.80
  5. Step 5: Solve for x
    x = 5,465,006,670.80/81,609.92
  6. Step 6: Final answer
    x = 66,964.98

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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.