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Finding the Fourth Proportional to 125,930.17, 188,940.21 and 59,379.76

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Solution

The fourth proportional to 125,930.17, 188,940.21 and 59,379.76 is: 89,090.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,930.17 : 188,940.21 = 59,379.76 : x
  2. Step 2: Convert to fraction form
    125,930.17/188,940.21 = 59,379.76/x
  3. Step 3: Cross multiply
    125,930.17x = 188,940.21 × 59,379.76
  4. Step 4: Simplify right side
    125,930.17x = 11,219,224,324.15
  5. Step 5: Solve for x
    x = 11,219,224,324.15/125,930.17
  6. Step 6: Final answer
    x = 89,090.84

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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.