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Finding the Fourth Proportional to 121,561.68, 167,748.06 and 67,842.48

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Solution

The fourth proportional to 121,561.68, 167,748.06 and 67,842.48 is: 93,618.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,561.68 : 167,748.06 = 67,842.48 : x
  2. Step 2: Convert to fraction form
    121,561.68/167,748.06 = 67,842.48/x
  3. Step 3: Cross multiply
    121,561.68x = 167,748.06 × 67,842.48
  4. Step 4: Simplify right side
    121,561.68x = 11,380,444,405.59
  5. Step 5: Solve for x
    x = 11,380,444,405.59/121,561.68
  6. Step 6: Final answer
    x = 93,618.68

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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.