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Finding the Fourth Proportional to 75,390.76, 104,057.94 and 43,579.48

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Solution

The fourth proportional to 75,390.76, 104,057.94 and 43,579.48 is: 60,150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,390.76 : 104,057.94 = 43,579.48 : x
  2. Step 2: Convert to fraction form
    75,390.76/104,057.94 = 43,579.48/x
  3. Step 3: Cross multiply
    75,390.76x = 104,057.94 × 43,579.48
  4. Step 4: Simplify right side
    75,390.76x = 4,534,790,915.07
  5. Step 5: Solve for x
    x = 4,534,790,915.07/75,390.76
  6. Step 6: Final answer
    x = 60,150.49

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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.