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Finding the Fourth Proportional to 425,633,306.70, 638,449,960.05 and 425,633,306.70

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Solution

The fourth proportional to 425,633,306.70, 638,449,960.05 and 425,633,306.70 is: 638,449,960.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,633,306.70 : 638,449,960.05 = 425,633,306.70 : x
  2. Step 2: Convert to fraction form
    425,633,306.70/638,449,960.05 = 425,633,306.70/x
  3. Step 3: Cross multiply
    425,633,306.70x = 638,449,960.05 × 425,633,306.70
  4. Step 4: Simplify right side
    425,633,306.70x = 271,745,567,658,564,384
  5. Step 5: Solve for x
    x = 271,745,567,658,564,384/425,633,306.70
  6. Step 6: Final answer
    x = 638,449,960.05

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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.