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Finding the Fourth Proportional to 125,764.76, 188,588.82 and 73,189.28

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Solution

The fourth proportional to 125,764.76, 188,588.82 and 73,189.28 is: 109,749.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,764.76 : 188,588.82 = 73,189.28 : x
  2. Step 2: Convert to fraction form
    125,764.76/188,588.82 = 73,189.28/x
  3. Step 3: Cross multiply
    125,764.76x = 188,588.82 × 73,189.28
  4. Step 4: Simplify right side
    125,764.76x = 13,802,679,951.85
  5. Step 5: Solve for x
    x = 13,802,679,951.85/125,764.76
  6. Step 6: Final answer
    x = 109,749.98

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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.