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Finding the Fourth Proportional to 220,324,812.40, 330,487,218.60 and 194,815,644.40

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Solution

The fourth proportional to 220,324,812.40, 330,487,218.60 and 194,815,644.40 is: 292,223,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,324,812.40 : 330,487,218.60 = 194,815,644.40 : x
  2. Step 2: Convert to fraction form
    220,324,812.40/330,487,218.60 = 194,815,644.40/x
  3. Step 3: Cross multiply
    220,324,812.40x = 330,487,218.60 × 194,815,644.40
  4. Step 4: Simplify right side
    220,324,812.40x = 64,384,080,457,522,672
  5. Step 5: Solve for x
    x = 64,384,080,457,522,672/220,324,812.40
  6. Step 6: Final answer
    x = 292,223,466.60

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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.