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Finding the Fourth Proportional to 576,835.38, 796,028.12 and 318,711.50

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Solution

The fourth proportional to 576,835.38, 796,028.12 and 318,711.50 is: 439,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,835.38 : 796,028.12 = 318,711.50 : x
  2. Step 2: Convert to fraction form
    576,835.38/796,028.12 = 318,711.50/x
  3. Step 3: Cross multiply
    576,835.38x = 796,028.12 × 318,711.50
  4. Step 4: Simplify right side
    576,835.38x = 253,703,316,167.38
  5. Step 5: Solve for x
    x = 253,703,316,167.38/576,835.38
  6. Step 6: Final answer
    x = 439,819.27

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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.