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Finding the Fourth Proportional to 479,843,003.40, 672,687,197.40 and 479,843,003.40

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Solution

The fourth proportional to 479,843,003.40, 672,687,197.40 and 479,843,003.40 is: 672,687,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,843,003.40 : 672,687,197.40 = 479,843,003.40 : x
  2. Step 2: Convert to fraction form
    479,843,003.40/672,687,197.40 = 479,843,003.40/x
  3. Step 3: Cross multiply
    479,843,003.40x = 672,687,197.40 × 479,843,003.40
  4. Step 4: Simplify right side
    479,843,003.40x = 322,784,245,149,144,640
  5. Step 5: Solve for x
    x = 322,784,245,149,144,640/479,843,003.40
  6. Step 6: Final answer
    x = 672,687,197.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.