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Finding the Fourth Proportional to 118,471.05, 177,776.78 and 43,643.79

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Solution

The fourth proportional to 118,471.05, 177,776.78 and 43,643.79 is: 65,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,471.05 : 177,776.78 = 43,643.79 : x
  2. Step 2: Convert to fraction form
    118,471.05/177,776.78 = 43,643.79/x
  3. Step 3: Cross multiply
    118,471.05x = 177,776.78 × 43,643.79
  4. Step 4: Simplify right side
    118,471.05x = 7,758,852,234.98
  5. Step 5: Solve for x
    x = 7,758,852,234.98/118,471.05
  6. Step 6: Final answer
    x = 65,491.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.