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Finding the Fourth Proportional to 65,627.40, 98,489.70 and 26,212.80

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Solution

The fourth proportional to 65,627.40, 98,489.70 and 26,212.80 is: 39,338.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,627.40 : 98,489.70 = 26,212.80 : x
  2. Step 2: Convert to fraction form
    65,627.40/98,489.70 = 26,212.80/x
  3. Step 3: Cross multiply
    65,627.40x = 98,489.70 × 26,212.80
  4. Step 4: Simplify right side
    65,627.40x = 2,581,690,808.16
  5. Step 5: Solve for x
    x = 2,581,690,808.16/65,627.40
  6. Step 6: Final answer
    x = 39,338.61

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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.