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Finding the Fourth Proportional to 75,687.94, 104,449.36 and 42,153.94

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Solution

The fourth proportional to 75,687.94, 104,449.36 and 42,153.94 is: 58,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,687.94 : 104,449.36 = 42,153.94 : x
  2. Step 2: Convert to fraction form
    75,687.94/104,449.36 = 42,153.94/x
  3. Step 3: Cross multiply
    75,687.94x = 104,449.36 × 42,153.94
  4. Step 4: Simplify right side
    75,687.94x = 4,402,951,687.97
  5. Step 5: Solve for x
    x = 4,402,951,687.97/75,687.94
  6. Step 6: Final answer
    x = 58,172.44

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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.