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Finding the Fourth Proportional to 73,690.92, 110,450.76 and 42,123.12

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Solution

The fourth proportional to 73,690.92, 110,450.76 and 42,123.12 is: 63,135.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,690.92 : 110,450.76 = 42,123.12 : x
  2. Step 2: Convert to fraction form
    73,690.92/110,450.76 = 42,123.12/x
  3. Step 3: Cross multiply
    73,690.92x = 110,450.76 × 42,123.12
  4. Step 4: Simplify right side
    73,690.92x = 4,652,530,617.57
  5. Step 5: Solve for x
    x = 4,652,530,617.57/73,690.92
  6. Step 6: Final answer
    x = 63,135.74

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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.