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Finding the Fourth Proportional to 156,609.92, 234,885.72 and 72,366.80

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Solution

The fourth proportional to 156,609.92, 234,885.72 and 72,366.80 is: 108,536.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,609.92 : 234,885.72 = 72,366.80 : x
  2. Step 2: Convert to fraction form
    156,609.92/234,885.72 = 72,366.80/x
  3. Step 3: Cross multiply
    156,609.92x = 234,885.72 × 72,366.80
  4. Step 4: Simplify right side
    156,609.92x = 16,997,927,922.10
  5. Step 5: Solve for x
    x = 16,997,927,922.10/156,609.92
  6. Step 6: Final answer
    x = 108,536.73

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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.