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Finding the Fourth Proportional to 351,971.94, 486,122.13 and 238,597.86

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Solution

The fourth proportional to 351,971.94, 486,122.13 and 238,597.86 is: 329,536.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,971.94 : 486,122.13 = 238,597.86 : x
  2. Step 2: Convert to fraction form
    351,971.94/486,122.13 = 238,597.86/x
  3. Step 3: Cross multiply
    351,971.94x = 486,122.13 × 238,597.86
  4. Step 4: Simplify right side
    351,971.94x = 115,987,699,916.64
  5. Step 5: Solve for x
    x = 115,987,699,916.64/351,971.94
  6. Step 6: Final answer
    x = 329,536.78

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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.