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Finding the Fourth Proportional to 156,644.60, 216,173.39 and 85,024.44

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Solution

The fourth proportional to 156,644.60, 216,173.39 and 85,024.44 is: 117,335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,644.60 : 216,173.39 = 85,024.44 : x
  2. Step 2: Convert to fraction form
    156,644.60/216,173.39 = 85,024.44/x
  3. Step 3: Cross multiply
    156,644.60x = 216,173.39 × 85,024.44
  4. Step 4: Simplify right side
    156,644.60x = 18,380,021,002.53
  5. Step 5: Solve for x
    x = 18,380,021,002.53/156,644.60
  6. Step 6: Final answer
    x = 117,335.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.