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Finding the Fourth Proportional to 576,821.36, 796,008.81 and 318,697.50

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Solution

The fourth proportional to 576,821.36, 796,008.81 and 318,697.50 is: 439,799.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,821.36 : 796,008.81 = 318,697.50 : x
  2. Step 2: Convert to fraction form
    576,821.36/796,008.81 = 318,697.50/x
  3. Step 3: Cross multiply
    576,821.36x = 796,008.81 × 318,697.50
  4. Step 4: Simplify right side
    576,821.36x = 253,686,016,306.12
  5. Step 5: Solve for x
    x = 253,686,016,306.12/576,821.36
  6. Step 6: Final answer
    x = 439,799.97

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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.