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Finding the Fourth Proportional to 363,568.89, 545,602.47 and 126,911.61

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Solution

The fourth proportional to 363,568.89, 545,602.47 and 126,911.61 is: 190,454.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,568.89 : 545,602.47 = 126,911.61 : x
  2. Step 2: Convert to fraction form
    363,568.89/545,602.47 = 126,911.61/x
  3. Step 3: Cross multiply
    363,568.89x = 545,602.47 × 126,911.61
  4. Step 4: Simplify right side
    363,568.89x = 69,243,287,887.68
  5. Step 5: Solve for x
    x = 69,243,287,887.68/363,568.89
  6. Step 6: Final answer
    x = 190,454.38

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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.