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Finding the Fourth Proportional to 112,266.40, 167,913.60 and 100,505.20

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Solution

The fourth proportional to 112,266.40, 167,913.60 and 100,505.20 is: 150,322.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,266.40 : 167,913.60 = 100,505.20 : x
  2. Step 2: Convert to fraction form
    112,266.40/167,913.60 = 100,505.20/x
  3. Step 3: Cross multiply
    112,266.40x = 167,913.60 × 100,505.20
  4. Step 4: Simplify right side
    112,266.40x = 16,876,189,950.72
  5. Step 5: Solve for x
    x = 16,876,189,950.72/112,266.40
  6. Step 6: Final answer
    x = 150,322.71

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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.