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Finding the Fourth Proportional to 317,753.08, 476,629.21 and 81,095.77

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Solution

The fourth proportional to 317,753.08, 476,629.21 and 81,095.77 is: 121,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,753.08 : 476,629.21 = 81,095.77 : x
  2. Step 2: Convert to fraction form
    317,753.08/476,629.21 = 81,095.77/x
  3. Step 3: Cross multiply
    317,753.08x = 476,629.21 × 81,095.77
  4. Step 4: Simplify right side
    317,753.08x = 38,652,612,789.44
  5. Step 5: Solve for x
    x = 38,652,612,789.44/317,753.08
  6. Step 6: Final answer
    x = 121,643.55

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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.