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Finding the Fourth Proportional to 64,611.11, 96,817.75 and 43,472.86

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Solution

The fourth proportional to 64,611.11, 96,817.75 and 43,472.86 is: 65,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,611.11 : 96,817.75 = 43,472.86 : x
  2. Step 2: Convert to fraction form
    64,611.11/96,817.75 = 43,472.86/x
  3. Step 3: Cross multiply
    64,611.11x = 96,817.75 × 43,472.86
  4. Step 4: Simplify right side
    64,611.11x = 4,208,944,140.54
  5. Step 5: Solve for x
    x = 4,208,944,140.54/64,611.11
  6. Step 6: Final answer
    x = 65,142.73

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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.