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Finding the Fourth Proportional to 203,909.68, 305,519.40 and 124,858.84

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Solution

The fourth proportional to 203,909.68, 305,519.40 and 124,858.84 is: 187,076.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,909.68 : 305,519.40 = 124,858.84 : x
  2. Step 2: Convert to fraction form
    203,909.68/305,519.40 = 124,858.84/x
  3. Step 3: Cross multiply
    203,909.68x = 305,519.40 × 124,858.84
  4. Step 4: Simplify right side
    203,909.68x = 38,146,797,881.50
  5. Step 5: Solve for x
    x = 38,146,797,881.50/203,909.68
  6. Step 6: Final answer
    x = 187,076.93

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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.