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Finding the Fourth Proportional to 327,876.01, 491,051.78 and 316,511.12

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Solution

The fourth proportional to 327,876.01, 491,051.78 and 316,511.12 is: 474,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,876.01 : 491,051.78 = 316,511.12 : x
  2. Step 2: Convert to fraction form
    327,876.01/491,051.78 = 316,511.12/x
  3. Step 3: Cross multiply
    327,876.01x = 491,051.78 × 316,511.12
  4. Step 4: Simplify right side
    327,876.01x = 155,423,350,884.70
  5. Step 5: Solve for x
    x = 155,423,350,884.70/327,876.01
  6. Step 6: Final answer
    x = 474,030.88

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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.