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Finding the Fourth Proportional to 279,635.63, 418,671.89 and 151,091.46

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Solution

The fourth proportional to 279,635.63, 418,671.89 and 151,091.46 is: 226,214.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,635.63 : 418,671.89 = 151,091.46 : x
  2. Step 2: Convert to fraction form
    279,635.63/418,671.89 = 151,091.46/x
  3. Step 3: Cross multiply
    279,635.63x = 418,671.89 × 151,091.46
  4. Step 4: Simplify right side
    279,635.63x = 63,257,746,932.20
  5. Step 5: Solve for x
    x = 63,257,746,932.20/279,635.63
  6. Step 6: Final answer
    x = 226,214.91

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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.