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Finding the Fourth Proportional to 218,510,687.40, 327,766,031.10 and 218,510,687.40

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Solution

The fourth proportional to 218,510,687.40, 327,766,031.10 and 218,510,687.40 is: 327,766,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,510,687.40 : 327,766,031.10 = 218,510,687.40 : x
  2. Step 2: Convert to fraction form
    218,510,687.40/327,766,031.10 = 218,510,687.40/x
  3. Step 3: Cross multiply
    218,510,687.40x = 327,766,031.10 × 218,510,687.40
  4. Step 4: Simplify right side
    218,510,687.40x = 71,620,380,762,030,784
  5. Step 5: Solve for x
    x = 71,620,380,762,030,784/218,510,687.40
  6. Step 6: Final answer
    x = 327,766,031.10

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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.