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Finding the Fourth Proportional to 317,925.54, 476,893.17 and 81,262.98

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Solution

The fourth proportional to 317,925.54, 476,893.17 and 81,262.98 is: 121,895.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,925.54 : 476,893.17 = 81,262.98 : x
  2. Step 2: Convert to fraction form
    317,925.54/476,893.17 = 81,262.98/x
  3. Step 3: Cross multiply
    317,925.54x = 476,893.17 × 81,262.98
  4. Step 4: Simplify right side
    317,925.54x = 38,753,760,135.85
  5. Step 5: Solve for x
    x = 38,753,760,135.85/317,925.54
  6. Step 6: Final answer
    x = 121,895.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.