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Finding the Fourth Proportional to 125,890.95, 188,939.70 and 124,906.80

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Solution

The fourth proportional to 125,890.95, 188,939.70 and 124,906.80 is: 187,462.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,890.95 : 188,939.70 = 124,906.80 : x
  2. Step 2: Convert to fraction form
    125,890.95/188,939.70 = 124,906.80/x
  3. Step 3: Cross multiply
    125,890.95x = 188,939.70 × 124,906.80
  4. Step 4: Simplify right side
    125,890.95x = 23,599,853,319.96
  5. Step 5: Solve for x
    x = 23,599,853,319.96/125,890.95
  6. Step 6: Final answer
    x = 187,462.67

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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.