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Finding the Fourth Proportional to 121,066.85, 167,074.50 and 67,356.87

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Solution

The fourth proportional to 121,066.85, 167,074.50 and 67,356.87 is: 92,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,066.85 : 167,074.50 = 67,356.87 : x
  2. Step 2: Convert to fraction form
    121,066.85/167,074.50 = 67,356.87/x
  3. Step 3: Cross multiply
    121,066.85x = 167,074.50 × 67,356.87
  4. Step 4: Simplify right side
    121,066.85x = 11,253,614,623.99
  5. Step 5: Solve for x
    x = 11,253,614,623.99/121,066.85
  6. Step 6: Final answer
    x = 92,953.72

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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.