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Finding the Fourth Proportional to 117,586.68, 162,265 and 69,838.80

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Solution

The fourth proportional to 117,586.68, 162,265 and 69,838.80 is: 96,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,586.68 : 162,265 = 69,838.80 : x
  2. Step 2: Convert to fraction form
    117,586.68/162,265 = 69,838.80/x
  3. Step 3: Cross multiply
    117,586.68x = 162,265 × 69,838.80
  4. Step 4: Simplify right side
    117,586.68x = 11,332,392,882
  5. Step 5: Solve for x
    x = 11,332,392,882/117,586.68
  6. Step 6: Final answer
    x = 96,374.80

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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.