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Finding the Fourth Proportional to 351,679.59, 527,517.63 and 127,039.86

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Solution

The fourth proportional to 351,679.59, 527,517.63 and 127,039.86 is: 190,559.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,679.59 : 527,517.63 = 127,039.86 : x
  2. Step 2: Convert to fraction form
    351,679.59/527,517.63 = 127,039.86/x
  3. Step 3: Cross multiply
    351,679.59x = 527,517.63 × 127,039.86
  4. Step 4: Simplify right side
    351,679.59x = 67,015,765,862.73
  5. Step 5: Solve for x
    x = 67,015,765,862.73/351,679.59
  6. Step 6: Final answer
    x = 190,559.16

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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.