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Finding the Fourth Proportional to 117,639.56, 162,343.49 and 63,924.87

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Solution

The fourth proportional to 117,639.56, 162,343.49 and 63,924.87 is: 88,216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,639.56 : 162,343.49 = 63,924.87 : x
  2. Step 2: Convert to fraction form
    117,639.56/162,343.49 = 63,924.87/x
  3. Step 3: Cross multiply
    117,639.56x = 162,343.49 × 63,924.87
  4. Step 4: Simplify right side
    117,639.56x = 10,377,786,653.41
  5. Step 5: Solve for x
    x = 10,377,786,653.41/117,639.56
  6. Step 6: Final answer
    x = 88,216.81

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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.