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Finding the Fourth Proportional to 439,398, 606,370.32 and 238,194

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Solution

The fourth proportional to 439,398, 606,370.32 and 238,194 is: 328,708.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,398 : 606,370.32 = 238,194 : x
  2. Step 2: Convert to fraction form
    439,398/606,370.32 = 238,194/x
  3. Step 3: Cross multiply
    439,398x = 606,370.32 × 238,194
  4. Step 4: Simplify right side
    439,398x = 144,433,772,002.08
  5. Step 5: Solve for x
    x = 144,433,772,002.08/439,398
  6. Step 6: Final answer
    x = 328,708.31

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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.