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Finding the Fourth Proportional to 121,472.88, 167,631.45 and 67,025.55

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Solution

The fourth proportional to 121,472.88, 167,631.45 and 67,025.55 is: 92,494.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,472.88 : 167,631.45 = 67,025.55 : x
  2. Step 2: Convert to fraction form
    121,472.88/167,631.45 = 67,025.55/x
  3. Step 3: Cross multiply
    121,472.88x = 167,631.45 × 67,025.55
  4. Step 4: Simplify right side
    121,472.88x = 11,235,590,133.55
  5. Step 5: Solve for x
    x = 11,235,590,133.55/121,472.88
  6. Step 6: Final answer
    x = 92,494.64

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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.