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Finding the Fourth Proportional to 117,687.96, 162,372.06 and 73,001.88

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Solution

The fourth proportional to 117,687.96, 162,372.06 and 73,001.88 is: 100,719.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,687.96 : 162,372.06 = 73,001.88 : x
  2. Step 2: Convert to fraction form
    117,687.96/162,372.06 = 73,001.88/x
  3. Step 3: Cross multiply
    117,687.96x = 162,372.06 × 73,001.88
  4. Step 4: Simplify right side
    117,687.96x = 11,853,465,639.47
  5. Step 5: Solve for x
    x = 11,853,465,639.47/117,687.96
  6. Step 6: Final answer
    x = 100,719.44

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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.