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Finding the Fourth Proportional to 122,020.96, 167,880.72 and 107,618.08

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Solution

The fourth proportional to 122,020.96, 167,880.72 and 107,618.08 is: 148,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,020.96 : 167,880.72 = 107,618.08 : x
  2. Step 2: Convert to fraction form
    122,020.96/167,880.72 = 107,618.08/x
  3. Step 3: Cross multiply
    122,020.96x = 167,880.72 × 107,618.08
  4. Step 4: Simplify right side
    122,020.96x = 18,067,000,755.42
  5. Step 5: Solve for x
    x = 18,067,000,755.42/122,020.96
  6. Step 6: Final answer
    x = 148,064.73

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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.