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Finding the Fourth Proportional to 106,462.76, 146,928.96 and 79,558.56

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Solution

The fourth proportional to 106,462.76, 146,928.96 and 79,558.56 is: 109,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,462.76 : 146,928.96 = 79,558.56 : x
  2. Step 2: Convert to fraction form
    106,462.76/146,928.96 = 79,558.56/x
  3. Step 3: Cross multiply
    106,462.76x = 146,928.96 × 79,558.56
  4. Step 4: Simplify right side
    106,462.76x = 11,689,456,479.90
  5. Step 5: Solve for x
    x = 11,689,456,479.90/106,462.76
  6. Step 6: Final answer
    x = 109,798.55

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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.