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Finding the Fourth Proportional to 118,076.71, 162,944.97 and 64,361.56

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Solution

The fourth proportional to 118,076.71, 162,944.97 and 64,361.56 is: 88,818.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,076.71 : 162,944.97 = 64,361.56 : x
  2. Step 2: Convert to fraction form
    118,076.71/162,944.97 = 64,361.56/x
  3. Step 3: Cross multiply
    118,076.71x = 162,944.97 × 64,361.56
  4. Step 4: Simplify right side
    118,076.71x = 10,487,392,463.35
  5. Step 5: Solve for x
    x = 10,487,392,463.35/118,076.71
  6. Step 6: Final answer
    x = 88,818.47

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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.