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Finding the Fourth Proportional to 392,252.06, 540,693.74 and 256,217.94

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Solution

The fourth proportional to 392,252.06, 540,693.74 and 256,217.94 is: 353,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,252.06 : 540,693.74 = 256,217.94 : x
  2. Step 2: Convert to fraction form
    392,252.06/540,693.74 = 256,217.94/x
  3. Step 3: Cross multiply
    392,252.06x = 540,693.74 × 256,217.94
  4. Step 4: Simplify right side
    392,252.06x = 138,535,436,233.70
  5. Step 5: Solve for x
    x = 138,535,436,233.70/392,252.06
  6. Step 6: Final answer
    x = 353,179.63

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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.