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Finding the Fourth Proportional to 316,524,091.20, 474,786,136.80 and 316,524,091.20

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Solution

The fourth proportional to 316,524,091.20, 474,786,136.80 and 316,524,091.20 is: 474,786,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,524,091.20 : 474,786,136.80 = 316,524,091.20 : x
  2. Step 2: Convert to fraction form
    316,524,091.20/474,786,136.80 = 316,524,091.20/x
  3. Step 3: Cross multiply
    316,524,091.20x = 474,786,136.80 × 316,524,091.20
  4. Step 4: Simplify right side
    316,524,091.20x = 150,281,250,464,978,880
  5. Step 5: Solve for x
    x = 150,281,250,464,978,880/316,524,091.20
  6. Step 6: Final answer
    x = 474,786,136.80

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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.