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Finding the Fourth Proportional to 173,909.40, 260,766.90 and 74,052.60

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Solution

The fourth proportional to 173,909.40, 260,766.90 and 74,052.60 is: 111,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,909.40 : 260,766.90 = 74,052.60 : x
  2. Step 2: Convert to fraction form
    173,909.40/260,766.90 = 74,052.60/x
  3. Step 3: Cross multiply
    173,909.40x = 260,766.90 × 74,052.60
  4. Step 4: Simplify right side
    173,909.40x = 19,310,466,938.94
  5. Step 5: Solve for x
    x = 19,310,466,938.94/173,909.40
  6. Step 6: Final answer
    x = 111,037.51

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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.