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Finding the Fourth Proportional to 672,570,697.40, 1,008,856,046.10 and 488,904,687.80

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Solution

The fourth proportional to 672,570,697.40, 1,008,856,046.10 and 488,904,687.80 is: 733,357,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,570,697.40 : 1,008,856,046.10 = 488,904,687.80 : x
  2. Step 2: Convert to fraction form
    672,570,697.40/1,008,856,046.10 = 488,904,687.80/x
  3. Step 3: Cross multiply
    672,570,697.40x = 1,008,856,046.10 × 488,904,687.80
  4. Step 4: Simplify right side
    672,570,697.40x = 493,234,450,253,662,912
  5. Step 5: Solve for x
    x = 493,234,450,253,662,912/672,570,697.40
  6. Step 6: Final answer
    x = 733,357,031.70

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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.