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Finding the Fourth Proportional to 117,287.48, 161,852.78 and 69,512.46

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Solution

The fourth proportional to 117,287.48, 161,852.78 and 69,512.46 is: 95,924.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,287.48 : 161,852.78 = 69,512.46 : x
  2. Step 2: Convert to fraction form
    117,287.48/161,852.78 = 69,512.46/x
  3. Step 3: Cross multiply
    117,287.48x = 161,852.78 × 69,512.46
  4. Step 4: Simplify right side
    117,287.48x = 11,250,784,895.64
  5. Step 5: Solve for x
    x = 11,250,784,895.64/117,287.48
  6. Step 6: Final answer
    x = 95,924.86

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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.