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Finding the Fourth Proportional to 407,912.18, 611,658.15 and 183,079.86

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Solution

The fourth proportional to 407,912.18, 611,658.15 and 183,079.86 is: 274,525.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,912.18 : 611,658.15 = 183,079.86 : x
  2. Step 2: Convert to fraction form
    407,912.18/611,658.15 = 183,079.86/x
  3. Step 3: Cross multiply
    407,912.18x = 611,658.15 × 183,079.86
  4. Step 4: Simplify right side
    407,912.18x = 111,982,288,469.86
  5. Step 5: Solve for x
    x = 111,982,288,469.86/407,912.18
  6. Step 6: Final answer
    x = 274,525.49

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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.