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Finding the Fourth Proportional to 69,037.80, 103,362.30 and 67,093.80

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Solution

The fourth proportional to 69,037.80, 103,362.30 and 67,093.80 is: 100,451.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,037.80 : 103,362.30 = 67,093.80 : x
  2. Step 2: Convert to fraction form
    69,037.80/103,362.30 = 67,093.80/x
  3. Step 3: Cross multiply
    69,037.80x = 103,362.30 × 67,093.80
  4. Step 4: Simplify right side
    69,037.80x = 6,934,969,483.74
  5. Step 5: Solve for x
    x = 6,934,969,483.74/69,037.80
  6. Step 6: Final answer
    x = 100,451.77

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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.