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Finding the Fourth Proportional to 156,697.80, 235,087.23 and 67,930.80

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Solution

The fourth proportional to 156,697.80, 235,087.23 and 67,930.80 is: 101,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,697.80 : 235,087.23 = 67,930.80 : x
  2. Step 2: Convert to fraction form
    156,697.80/235,087.23 = 67,930.80/x
  3. Step 3: Cross multiply
    156,697.80x = 235,087.23 × 67,930.80
  4. Step 4: Simplify right side
    156,697.80x = 15,969,663,603.68
  5. Step 5: Solve for x
    x = 15,969,663,603.68/156,697.80
  6. Step 6: Final answer
    x = 101,913.77

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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.