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Finding the Fourth Proportional to 461,091.10, 636,209.48 and 279,898.42

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Solution

The fourth proportional to 461,091.10, 636,209.48 and 279,898.42 is: 386,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,091.10 : 636,209.48 = 279,898.42 : x
  2. Step 2: Convert to fraction form
    461,091.10/636,209.48 = 279,898.42/x
  3. Step 3: Cross multiply
    461,091.10x = 636,209.48 × 279,898.42
  4. Step 4: Simplify right side
    461,091.10x = 178,074,028,241.02
  5. Step 5: Solve for x
    x = 178,074,028,241.02/461,091.10
  6. Step 6: Final answer
    x = 386,201.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.