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Finding the Fourth Proportional to 121,796.48, 167,926.20 and 93,151.28

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Solution

The fourth proportional to 121,796.48, 167,926.20 and 93,151.28 is: 128,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,796.48 : 167,926.20 = 93,151.28 : x
  2. Step 2: Convert to fraction form
    121,796.48/167,926.20 = 93,151.28/x
  3. Step 3: Cross multiply
    121,796.48x = 167,926.20 × 93,151.28
  4. Step 4: Simplify right side
    121,796.48x = 15,642,540,475.54
  5. Step 5: Solve for x
    x = 15,642,540,475.54/121,796.48
  6. Step 6: Final answer
    x = 128,431.79

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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.