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Finding the Fourth Proportional to 579,726,863.60, 809,895,740.20 and 579,726,863.60

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Solution

The fourth proportional to 579,726,863.60, 809,895,740.20 and 579,726,863.60 is: 809,895,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,726,863.60 : 809,895,740.20 = 579,726,863.60 : x
  2. Step 2: Convert to fraction form
    579,726,863.60/809,895,740.20 = 579,726,863.60/x
  3. Step 3: Cross multiply
    579,726,863.60x = 809,895,740.20 × 579,726,863.60
  4. Step 4: Simplify right side
    579,726,863.60x = 469,518,317,309,146,496
  5. Step 5: Solve for x
    x = 469,518,317,309,146,496/579,726,863.60
  6. Step 6: Final answer
    x = 809,895,740.20

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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.