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Finding the Fourth Proportional to 117,220.91, 161,764.63 and 63,507.38

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Solution

The fourth proportional to 117,220.91, 161,764.63 and 63,507.38 is: 87,640.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,220.91 : 161,764.63 = 63,507.38 : x
  2. Step 2: Convert to fraction form
    117,220.91/161,764.63 = 63,507.38/x
  3. Step 3: Cross multiply
    117,220.91x = 161,764.63 × 63,507.38
  4. Step 4: Simplify right side
    117,220.91x = 10,273,246,860.38
  5. Step 5: Solve for x
    x = 10,273,246,860.38/117,220.91
  6. Step 6: Final answer
    x = 87,640.06

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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.