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Finding the Fourth Proportional to 173,942.40, 261,023.40 and 74,102.64

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Solution

The fourth proportional to 173,942.40, 261,023.40 and 74,102.64 is: 111,200.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,942.40 : 261,023.40 = 74,102.64 : x
  2. Step 2: Convert to fraction form
    173,942.40/261,023.40 = 74,102.64/x
  3. Step 3: Cross multiply
    173,942.40x = 261,023.40 × 74,102.64
  4. Step 4: Simplify right side
    173,942.40x = 19,342,523,041.78
  5. Step 5: Solve for x
    x = 19,342,523,041.78/173,942.40
  6. Step 6: Final answer
    x = 111,200.74

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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.