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Finding the Fourth Proportional to 125,692.76, 188,432.83 and 54,561.94

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Solution

The fourth proportional to 125,692.76, 188,432.83 and 54,561.94 is: 81,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,692.76 : 188,432.83 = 54,561.94 : x
  2. Step 2: Convert to fraction form
    125,692.76/188,432.83 = 54,561.94/x
  3. Step 3: Cross multiply
    125,692.76x = 188,432.83 × 54,561.94
  4. Step 4: Simplify right side
    125,692.76x = 10,281,260,764.49
  5. Step 5: Solve for x
    x = 10,281,260,764.49/125,692.76
  6. Step 6: Final answer
    x = 81,796.76

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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.