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Finding the Fourth Proportional to 125,687.94, 188,491.85 and 41,432.40

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Solution

The fourth proportional to 125,687.94, 188,491.85 and 41,432.40 is: 62,135.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,687.94 : 188,491.85 = 41,432.40 : x
  2. Step 2: Convert to fraction form
    125,687.94/188,491.85 = 41,432.40/x
  3. Step 3: Cross multiply
    125,687.94x = 188,491.85 × 41,432.40
  4. Step 4: Simplify right side
    125,687.94x = 7,809,669,674.15
  5. Step 5: Solve for x
    x = 7,809,669,674.15/125,687.94
  6. Step 6: Final answer
    x = 62,135.40

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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.