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Finding the Fourth Proportional to 348,866.28, 481,490.34 and 212,929.64

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Solution

The fourth proportional to 348,866.28, 481,490.34 and 212,929.64 is: 293,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,866.28 : 481,490.34 = 212,929.64 : x
  2. Step 2: Convert to fraction form
    348,866.28/481,490.34 = 212,929.64/x
  3. Step 3: Cross multiply
    348,866.28x = 481,490.34 × 212,929.64
  4. Step 4: Simplify right side
    348,866.28x = 102,523,564,759.68
  5. Step 5: Solve for x
    x = 102,523,564,759.68/348,866.28
  6. Step 6: Final answer
    x = 293,876.40

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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.