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Finding the Fourth Proportional to 118,472.56, 177,727.30 and 71,076.51

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Solution

The fourth proportional to 118,472.56, 177,727.30 and 71,076.51 is: 106,625.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,472.56 : 177,727.30 = 71,076.51 : x
  2. Step 2: Convert to fraction form
    118,472.56/177,727.30 = 71,076.51/x
  3. Step 3: Cross multiply
    118,472.56x = 177,727.30 × 71,076.51
  4. Step 4: Simplify right side
    118,472.56x = 12,632,236,038.03
  5. Step 5: Solve for x
    x = 12,632,236,038.03/118,472.56
  6. Step 6: Final answer
    x = 106,625.84

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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.