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Finding the Fourth Proportional to 406,958.80, 610,438.20 and 111,470.80

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Solution

The fourth proportional to 406,958.80, 610,438.20 and 111,470.80 is: 167,206.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,958.80 : 610,438.20 = 111,470.80 : x
  2. Step 2: Convert to fraction form
    406,958.80/610,438.20 = 111,470.80/x
  3. Step 3: Cross multiply
    406,958.80x = 610,438.20 × 111,470.80
  4. Step 4: Simplify right side
    406,958.80x = 68,046,034,504.56
  5. Step 5: Solve for x
    x = 68,046,034,504.56/406,958.80
  6. Step 6: Final answer
    x = 167,206.20

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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.