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Finding the Fourth Proportional to 386,059.03, 578,891.11 and 161,358.15

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Solution

The fourth proportional to 386,059.03, 578,891.11 and 161,358.15 is: 241,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,059.03 : 578,891.11 = 161,358.15 : x
  2. Step 2: Convert to fraction form
    386,059.03/578,891.11 = 161,358.15/x
  3. Step 3: Cross multiply
    386,059.03x = 578,891.11 × 161,358.15
  4. Step 4: Simplify right side
    386,059.03x = 93,408,794,859.80
  5. Step 5: Solve for x
    x = 93,408,794,859.80/386,059.03
  6. Step 6: Final answer
    x = 241,954.70

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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.