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Finding the Fourth Proportional to 386,465.52, 579,711.24 and 116,605.92

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Solution

The fourth proportional to 386,465.52, 579,711.24 and 116,605.92 is: 174,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,465.52 : 579,711.24 = 116,605.92 : x
  2. Step 2: Convert to fraction form
    386,465.52/579,711.24 = 116,605.92/x
  3. Step 3: Cross multiply
    386,465.52x = 579,711.24 × 116,605.92
  4. Step 4: Simplify right side
    386,465.52x = 67,597,762,474.54
  5. Step 5: Solve for x
    x = 67,597,762,474.54/386,465.52
  6. Step 6: Final answer
    x = 174,912.79

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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.