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Finding the Fourth Proportional to 125,896.87, 188,877.30 and 47,011.78

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Solution

The fourth proportional to 125,896.87, 188,877.30 and 47,011.78 is: 70,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,896.87 : 188,877.30 = 47,011.78 : x
  2. Step 2: Convert to fraction form
    125,896.87/188,877.30 = 47,011.78/x
  3. Step 3: Cross multiply
    125,896.87x = 188,877.30 × 47,011.78
  4. Step 4: Simplify right side
    125,896.87x = 8,879,458,074.59
  5. Step 5: Solve for x
    x = 8,879,458,074.59/125,896.87
  6. Step 6: Final answer
    x = 70,529.62

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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.