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Finding the Fourth Proportional to 317,753.88, 476,630.55 and 81,096.54

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Solution

The fourth proportional to 317,753.88, 476,630.55 and 81,096.54 is: 121,644.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,753.88 : 476,630.55 = 81,096.54 : x
  2. Step 2: Convert to fraction form
    317,753.88/476,630.55 = 81,096.54/x
  3. Step 3: Cross multiply
    317,753.88x = 476,630.55 × 81,096.54
  4. Step 4: Simplify right side
    317,753.88x = 38,653,088,463.30
  5. Step 5: Solve for x
    x = 38,653,088,463.30/317,753.88
  6. Step 6: Final answer
    x = 121,644.74

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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.