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Finding the Fourth Proportional to 121,082.55, 167,085.61 and 67,365.55

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Solution

The fourth proportional to 121,082.55, 167,085.61 and 67,365.55 is: 92,959.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,082.55 : 167,085.61 = 67,365.55 : x
  2. Step 2: Convert to fraction form
    121,082.55/167,085.61 = 67,365.55/x
  3. Step 3: Cross multiply
    121,082.55x = 167,085.61 × 67,365.55
  4. Step 4: Simplify right side
    121,082.55x = 11,255,814,014.74
  5. Step 5: Solve for x
    x = 11,255,814,014.74/121,082.55
  6. Step 6: Final answer
    x = 92,959.84

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1.5x scale

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.