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Finding the Fourth Proportional to 472,392,469.80, 708,588,704.70 and 165,715,583.40

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Solution

The fourth proportional to 472,392,469.80, 708,588,704.70 and 165,715,583.40 is: 248,573,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,469.80 : 708,588,704.70 = 165,715,583.40 : x
  2. Step 2: Convert to fraction form
    472,392,469.80/708,588,704.70 = 165,715,583.40/x
  3. Step 3: Cross multiply
    472,392,469.80x = 708,588,704.70 × 165,715,583.40
  4. Step 4: Simplify right side
    472,392,469.80x = 117,424,190,590,010,832
  5. Step 5: Solve for x
    x = 117,424,190,590,010,832/472,392,469.80
  6. Step 6: Final answer
    x = 248,573,375.10

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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.