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Finding the Fourth Proportional to 156,930.90, 235,137.15 and 133,602.90

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Solution

The fourth proportional to 156,930.90, 235,137.15 and 133,602.90 is: 200,183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.90 : 235,137.15 = 133,602.90 : x
  2. Step 2: Convert to fraction form
    156,930.90/235,137.15 = 133,602.90/x
  3. Step 3: Cross multiply
    156,930.90x = 235,137.15 × 133,602.90
  4. Step 4: Simplify right side
    156,930.90x = 31,415,005,137.74
  5. Step 5: Solve for x
    x = 31,415,005,137.74/156,930.90
  6. Step 6: Final answer
    x = 200,183.68

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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.