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Finding the Fourth Proportional to 228,912.30, 343,368.45 and 195,086.70

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Solution

The fourth proportional to 228,912.30, 343,368.45 and 195,086.70 is: 292,630.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,912.30 : 343,368.45 = 195,086.70 : x
  2. Step 2: Convert to fraction form
    228,912.30/343,368.45 = 195,086.70/x
  3. Step 3: Cross multiply
    228,912.30x = 343,368.45 × 195,086.70
  4. Step 4: Simplify right side
    228,912.30x = 66,986,617,794.62
  5. Step 5: Solve for x
    x = 66,986,617,794.62/228,912.30
  6. Step 6: Final answer
    x = 292,630.05

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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.