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Finding the Fourth Proportional to 76,134.94, 105,066.21 and 42,600.94

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Solution

The fourth proportional to 76,134.94, 105,066.21 and 42,600.94 is: 58,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,134.94 : 105,066.21 = 42,600.94 : x
  2. Step 2: Convert to fraction form
    76,134.94/105,066.21 = 42,600.94/x
  3. Step 3: Cross multiply
    76,134.94x = 105,066.21 × 42,600.94
  4. Step 4: Simplify right side
    76,134.94x = 4,475,919,205.33
  5. Step 5: Solve for x
    x = 4,475,919,205.33/76,134.94
  6. Step 6: Final answer
    x = 58,789.29

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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.