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Finding the Fourth Proportional to 252,768,987.90, 379,153,481.85 and 252,768,987.90

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Solution

The fourth proportional to 252,768,987.90, 379,153,481.85 and 252,768,987.90 is: 379,153,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,768,987.90 : 379,153,481.85 = 252,768,987.90 : x
  2. Step 2: Convert to fraction form
    252,768,987.90/379,153,481.85 = 252,768,987.90/x
  3. Step 3: Cross multiply
    252,768,987.90x = 379,153,481.85 × 252,768,987.90
  4. Step 4: Simplify right side
    252,768,987.90x = 95,838,241,865,985,520
  5. Step 5: Solve for x
    x = 95,838,241,865,985,520/252,768,987.90
  6. Step 6: Final answer
    x = 379,153,481.85

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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.