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Finding the Fourth Proportional to 620,584,000.20, 930,801,350.70 and 257,040,448.20

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Solution

The fourth proportional to 620,584,000.20, 930,801,350.70 and 257,040,448.20 is: 385,529,753.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,584,000.20 : 930,801,350.70 = 257,040,448.20 : x
  2. Step 2: Convert to fraction form
    620,584,000.20/930,801,350.70 = 257,040,448.20/x
  3. Step 3: Cross multiply
    620,584,000.20x = 930,801,350.70 × 257,040,448.20
  4. Step 4: Simplify right side
    620,584,000.20x = 239,253,596,369,093,376
  5. Step 5: Solve for x
    x = 239,253,596,369,093,376/620,584,000.20
  6. Step 6: Final answer
    x = 385,529,753.09

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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.