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Finding the Fourth Proportional to 348,881.97, 481,509.20 and 212,994.69

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Solution

The fourth proportional to 348,881.97, 481,509.20 and 212,994.69 is: 293,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,881.97 : 481,509.20 = 212,994.69 : x
  2. Step 2: Convert to fraction form
    348,881.97/481,509.20 = 212,994.69/x
  3. Step 3: Cross multiply
    348,881.97x = 481,509.20 × 212,994.69
  4. Step 4: Simplify right side
    348,881.97x = 102,558,901,721.18
  5. Step 5: Solve for x
    x = 102,558,901,721.18/348,881.97
  6. Step 6: Final answer
    x = 293,964.47

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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.