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Finding the Fourth Proportional to 463,876.22, 640,138.32 and 272,901.89

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Solution

The fourth proportional to 463,876.22, 640,138.32 and 272,901.89 is: 376,598.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,876.22 : 640,138.32 = 272,901.89 : x
  2. Step 2: Convert to fraction form
    463,876.22/640,138.32 = 272,901.89/x
  3. Step 3: Cross multiply
    463,876.22x = 640,138.32 × 272,901.89
  4. Step 4: Simplify right side
    463,876.22x = 174,694,954,188.73
  5. Step 5: Solve for x
    x = 174,694,954,188.73/463,876.22
  6. Step 6: Final answer
    x = 376,598.21

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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.