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Finding the Fourth Proportional to 75,857.62, 104,658.54 and 49,015.93

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Solution

The fourth proportional to 75,857.62, 104,658.54 and 49,015.93 is: 67,625.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,857.62 : 104,658.54 = 49,015.93 : x
  2. Step 2: Convert to fraction form
    75,857.62/104,658.54 = 49,015.93/x
  3. Step 3: Cross multiply
    75,857.62x = 104,658.54 × 49,015.93
  4. Step 4: Simplify right side
    75,857.62x = 5,129,935,670.54
  5. Step 5: Solve for x
    x = 5,129,935,670.54/75,857.62
  6. Step 6: Final answer
    x = 67,625.85

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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.