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Finding the Fourth Proportional to 462,812.22, 638,672.40 and 261,608.22

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Solution

The fourth proportional to 462,812.22, 638,672.40 and 261,608.22 is: 361,014.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,812.22 : 638,672.40 = 261,608.22 : x
  2. Step 2: Convert to fraction form
    462,812.22/638,672.40 = 261,608.22/x
  3. Step 3: Cross multiply
    462,812.22x = 638,672.40 × 261,608.22
  4. Step 4: Simplify right side
    462,812.22x = 167,081,948,784.47
  5. Step 5: Solve for x
    x = 167,081,948,784.47/462,812.22
  6. Step 6: Final answer
    x = 361,014.56

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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.