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Finding the Fourth Proportional to 363,940.94, 545,962.44 and 127,229.78

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Solution

The fourth proportional to 363,940.94, 545,962.44 and 127,229.78 is: 190,862.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,940.94 : 545,962.44 = 127,229.78 : x
  2. Step 2: Convert to fraction form
    363,940.94/545,962.44 = 127,229.78/x
  3. Step 3: Cross multiply
    363,940.94x = 545,962.44 × 127,229.78
  4. Step 4: Simplify right side
    363,940.94x = 69,462,681,129.46
  5. Step 5: Solve for x
    x = 69,462,681,129.46/363,940.94
  6. Step 6: Final answer
    x = 190,862.51

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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.