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Finding the Fourth Proportional to 341,912.88, 512,940.60 and 105,243.84

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Solution

The fourth proportional to 341,912.88, 512,940.60 and 105,243.84 is: 157,887.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,912.88 : 512,940.60 = 105,243.84 : x
  2. Step 2: Convert to fraction form
    341,912.88/512,940.60 = 105,243.84/x
  3. Step 3: Cross multiply
    341,912.88x = 512,940.60 × 105,243.84
  4. Step 4: Simplify right side
    341,912.88x = 53,983,838,435.90
  5. Step 5: Solve for x
    x = 53,983,838,435.90/341,912.88
  6. Step 6: Final answer
    x = 157,887.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.