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Finding the Fourth Proportional to 121,074.76, 167,106.18 and 75,773.80

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Solution

The fourth proportional to 121,074.76, 167,106.18 and 75,773.80 is: 104,582.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,074.76 : 167,106.18 = 75,773.80 : x
  2. Step 2: Convert to fraction form
    121,074.76/167,106.18 = 75,773.80/x
  3. Step 3: Cross multiply
    121,074.76x = 167,106.18 × 75,773.80
  4. Step 4: Simplify right side
    121,074.76x = 12,662,270,262.08
  5. Step 5: Solve for x
    x = 12,662,270,262.08/121,074.76
  6. Step 6: Final answer
    x = 104,582.25

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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.