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Finding the Fourth Proportional to 65,903.70, 98,855.55 and 54,093.90

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Solution

The fourth proportional to 65,903.70, 98,855.55 and 54,093.90 is: 81,140.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,903.70 : 98,855.55 = 54,093.90 : x
  2. Step 2: Convert to fraction form
    65,903.70/98,855.55 = 54,093.90/x
  3. Step 3: Cross multiply
    65,903.70x = 98,855.55 × 54,093.90
  4. Step 4: Simplify right side
    65,903.70x = 5,347,482,236.15
  5. Step 5: Solve for x
    x = 5,347,482,236.15/65,903.70
  6. Step 6: Final answer
    x = 81,140.85

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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.