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Finding the Fourth Proportional to 721,797.29, 996,329.27 and 415,995.83

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Solution

The fourth proportional to 721,797.29, 996,329.27 and 415,995.83 is: 574,217.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,797.29 : 996,329.27 = 415,995.83 : x
  2. Step 2: Convert to fraction form
    721,797.29/996,329.27 = 415,995.83/x
  3. Step 3: Cross multiply
    721,797.29x = 996,329.27 × 415,995.83
  4. Step 4: Simplify right side
    721,797.29x = 414,468,825,157.76
  5. Step 5: Solve for x
    x = 414,468,825,157.76/721,797.29
  6. Step 6: Final answer
    x = 574,217.76

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Double scale
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1.5x scale

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.