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Finding the Fourth Proportional to 123,869.70, 185,853.15 and 44,991.90

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Solution

The fourth proportional to 123,869.70, 185,853.15 and 44,991.90 is: 67,505.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,869.70 : 185,853.15 = 44,991.90 : x
  2. Step 2: Convert to fraction form
    123,869.70/185,853.15 = 44,991.90/x
  3. Step 3: Cross multiply
    123,869.70x = 185,853.15 × 44,991.90
  4. Step 4: Simplify right side
    123,869.70x = 8,361,886,339.49
  5. Step 5: Solve for x
    x = 8,361,886,339.49/123,869.70
  6. Step 6: Final answer
    x = 67,505.50

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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.