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Finding the Fourth Proportional to 331,863.84, 497,640.08 and 121,354.56

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Solution

The fourth proportional to 331,863.84, 497,640.08 and 121,354.56 is: 181,974.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,863.84 : 497,640.08 = 121,354.56 : x
  2. Step 2: Convert to fraction form
    331,863.84/497,640.08 = 121,354.56/x
  3. Step 3: Cross multiply
    331,863.84x = 497,640.08 × 121,354.56
  4. Step 4: Simplify right side
    331,863.84x = 60,390,892,946.76
  5. Step 5: Solve for x
    x = 60,390,892,946.76/331,863.84
  6. Step 6: Final answer
    x = 181,974.91

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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.