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Finding the Fourth Proportional to 106,555.50, 147,049.78 and 58,811.92

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Solution

The fourth proportional to 106,555.50, 147,049.78 and 58,811.92 is: 81,162.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,555.50 : 147,049.78 = 58,811.92 : x
  2. Step 2: Convert to fraction form
    106,555.50/147,049.78 = 58,811.92/x
  3. Step 3: Cross multiply
    106,555.50x = 147,049.78 × 58,811.92
  4. Step 4: Simplify right side
    106,555.50x = 8,648,280,320.15
  5. Step 5: Solve for x
    x = 8,648,280,320.15/106,555.50
  6. Step 6: Final answer
    x = 81,162.21

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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.