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Finding the Fourth Proportional to 386,503.94, 579,760.37 and 116,634.42

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Solution

The fourth proportional to 386,503.94, 579,760.37 and 116,634.42 is: 174,952.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,503.94 : 579,760.37 = 116,634.42 : x
  2. Step 2: Convert to fraction form
    386,503.94/579,760.37 = 116,634.42/x
  3. Step 3: Cross multiply
    386,503.94x = 579,760.37 × 116,634.42
  4. Step 4: Simplify right side
    386,503.94x = 67,620,014,493.94
  5. Step 5: Solve for x
    x = 67,620,014,493.94/386,503.94
  6. Step 6: Final answer
    x = 174,952.98

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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.