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Finding the Fourth Proportional to 664,651.17, 914,909.58 and 579,620.61

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Solution

The fourth proportional to 664,651.17, 914,909.58 and 579,620.61 is: 797,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,651.17 : 914,909.58 = 579,620.61 : x
  2. Step 2: Convert to fraction form
    664,651.17/914,909.58 = 579,620.61/x
  3. Step 3: Cross multiply
    664,651.17x = 914,909.58 × 579,620.61
  4. Step 4: Simplify right side
    664,651.17x = 530,300,448,854.44
  5. Step 5: Solve for x
    x = 530,300,448,854.44/664,651.17
  6. Step 6: Final answer
    x = 797,862.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.