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Finding the Fourth Proportional to 722,339,924.03, 996,834,197 and 392,315,063.03

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Solution

The fourth proportional to 722,339,924.03, 996,834,197 and 392,315,063.03 is: 541,397,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,339,924.03 : 996,834,197 = 392,315,063.03 : x
  2. Step 2: Convert to fraction form
    722,339,924.03/996,834,197 = 392,315,063.03/x
  3. Step 3: Cross multiply
    722,339,924.03x = 996,834,197 × 392,315,063.03
  4. Step 4: Simplify right side
    722,339,924.03x = 391,073,070,826,514,432
  5. Step 5: Solve for x
    x = 391,073,070,826,514,432/722,339,924.03
  6. Step 6: Final answer
    x = 541,397,557.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.