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Finding the Fourth Proportional to 458,017.72, 631,483.25 and 327,351.31

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Solution

The fourth proportional to 458,017.72, 631,483.25 and 327,351.31 is: 451,329.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,017.72 : 631,483.25 = 327,351.31 : x
  2. Step 2: Convert to fraction form
    458,017.72/631,483.25 = 327,351.31/x
  3. Step 3: Cross multiply
    458,017.72x = 631,483.25 × 327,351.31
  4. Step 4: Simplify right side
    458,017.72x = 206,716,865,915.09
  5. Step 5: Solve for x
    x = 206,716,865,915.09/458,017.72
  6. Step 6: Final answer
    x = 451,329.41

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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.