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Finding the Fourth Proportional to 111,811.53, 167,520.42 and 99,608.07

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Solution

The fourth proportional to 111,811.53, 167,520.42 and 99,608.07 is: 149,236.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,811.53 : 167,520.42 = 99,608.07 : x
  2. Step 2: Convert to fraction form
    111,811.53/167,520.42 = 99,608.07/x
  3. Step 3: Cross multiply
    111,811.53x = 167,520.42 × 99,608.07
  4. Step 4: Simplify right side
    111,811.53x = 16,686,385,721.79
  5. Step 5: Solve for x
    x = 16,686,385,721.79/111,811.53
  6. Step 6: Final answer
    x = 149,236.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.