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Finding the Fourth Proportional to 117,164.70, 161,686.46 and 63,448.48

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Solution

The fourth proportional to 117,164.70, 161,686.46 and 63,448.48 is: 87,558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,164.70 : 161,686.46 = 63,448.48 : x
  2. Step 2: Convert to fraction form
    117,164.70/161,686.46 = 63,448.48/x
  3. Step 3: Cross multiply
    117,164.70x = 161,686.46 × 63,448.48
  4. Step 4: Simplify right side
    117,164.70x = 10,258,760,123.58
  5. Step 5: Solve for x
    x = 10,258,760,123.58/117,164.70
  6. Step 6: Final answer
    x = 87,558.46

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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.