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Finding the Fourth Proportional to 579,702,944.30, 869,554,416.45 and 396,036,934.70

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Solution

The fourth proportional to 579,702,944.30, 869,554,416.45 and 396,036,934.70 is: 594,055,402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,702,944.30 : 869,554,416.45 = 396,036,934.70 : x
  2. Step 2: Convert to fraction form
    579,702,944.30/869,554,416.45 = 396,036,934.70/x
  3. Step 3: Cross multiply
    579,702,944.30x = 869,554,416.45 × 396,036,934.70
  4. Step 4: Simplify right side
    579,702,944.30x = 344,375,665,645,705,280
  5. Step 5: Solve for x
    x = 344,375,665,645,705,280/579,702,944.30
  6. Step 6: Final answer
    x = 594,055,402.05

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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.