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Finding the Fourth Proportional to 125,649.54, 188,203.66 and 58,989.78

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Solution

The fourth proportional to 125,649.54, 188,203.66 and 58,989.78 is: 88,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,649.54 : 188,203.66 = 58,989.78 : x
  2. Step 2: Convert to fraction form
    125,649.54/188,203.66 = 58,989.78/x
  3. Step 3: Cross multiply
    125,649.54x = 188,203.66 × 58,989.78
  4. Step 4: Simplify right side
    125,649.54x = 11,102,093,056.88
  5. Step 5: Solve for x
    x = 11,102,093,056.88/125,649.54
  6. Step 6: Final answer
    x = 88,357.61

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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.