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Finding the Fourth Proportional to 117,939.44, 162,758.36 and 66,953.67

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Solution

The fourth proportional to 117,939.44, 162,758.36 and 66,953.67 is: 92,397.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,939.44 : 162,758.36 = 66,953.67 : x
  2. Step 2: Convert to fraction form
    117,939.44/162,758.36 = 66,953.67/x
  3. Step 3: Cross multiply
    117,939.44x = 162,758.36 × 66,953.67
  4. Step 4: Simplify right side
    117,939.44x = 10,897,269,997.74
  5. Step 5: Solve for x
    x = 10,897,269,997.74/117,939.44
  6. Step 6: Final answer
    x = 92,397.17

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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.