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Finding the Fourth Proportional to 323,860.78, 486,212.12 and 249,033.46

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Solution

The fourth proportional to 323,860.78, 486,212.12 and 249,033.46 is: 373,873.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,860.78 : 486,212.12 = 249,033.46 : x
  2. Step 2: Convert to fraction form
    323,860.78/486,212.12 = 249,033.46/x
  3. Step 3: Cross multiply
    323,860.78x = 486,212.12 × 249,033.46
  4. Step 4: Simplify right side
    323,860.78x = 121,083,086,537.54
  5. Step 5: Solve for x
    x = 121,083,086,537.54/323,860.78
  6. Step 6: Final answer
    x = 373,873.88

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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.