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Finding the Fourth Proportional to 106,390.62, 146,825.61 and 58,643.85

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Solution

The fourth proportional to 106,390.62, 146,825.61 and 58,643.85 is: 80,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,390.62 : 146,825.61 = 58,643.85 : x
  2. Step 2: Convert to fraction form
    106,390.62/146,825.61 = 58,643.85/x
  3. Step 3: Cross multiply
    106,390.62x = 146,825.61 × 58,643.85
  4. Step 4: Simplify right side
    106,390.62x = 8,610,419,049.00
  5. Step 5: Solve for x
    x = 8,610,419,049.00/106,390.62
  6. Step 6: Final answer
    x = 80,932.13

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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.