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Finding the Fourth Proportional to 398,604,843.90, 597,907,265.85 and 398,604,843.90

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Solution

The fourth proportional to 398,604,843.90, 597,907,265.85 and 398,604,843.90 is: 597,907,265.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,604,843.90 : 597,907,265.85 = 398,604,843.90 : x
  2. Step 2: Convert to fraction form
    398,604,843.90/597,907,265.85 = 398,604,843.90/x
  3. Step 3: Cross multiply
    398,604,843.90x = 597,907,265.85 × 398,604,843.90
  4. Step 4: Simplify right side
    398,604,843.90x = 238,328,732,370,815,040
  5. Step 5: Solve for x
    x = 238,328,732,370,815,040/398,604,843.90
  6. Step 6: Final answer
    x = 597,907,265.85

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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.