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Finding the Fourth Proportional to 543,672,553.70, 815,508,830.55 and 543,672,553.70

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Solution

The fourth proportional to 543,672,553.70, 815,508,830.55 and 543,672,553.70 is: 815,508,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,672,553.70 : 815,508,830.55 = 543,672,553.70 : x
  2. Step 2: Convert to fraction form
    543,672,553.70/815,508,830.55 = 543,672,553.70/x
  3. Step 3: Cross multiply
    543,672,553.70x = 815,508,830.55 × 543,672,553.70
  4. Step 4: Simplify right side
    543,672,553.70x = 443,369,768,470,019,072
  5. Step 5: Solve for x
    x = 443,369,768,470,019,072/543,672,553.70
  6. Step 6: Final answer
    x = 815,508,830.55

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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.